List of free software for Web 2.0 Services
Encyclopedia
All web applications, both traditional and Web 2.0
Web 2.0
The term Web 2.0 is associated with web applications that facilitate participatory information sharing, interoperability, user-centered design, and collaboration on the World Wide Web...

 are operated by software running somewhere. This is a list of free software
Free software
Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...

 which can be used to run alternative web applications. Also listed are similar proprietary
Proprietary software
Proprietary software is computer software licensed under exclusive legal right of the copyright holder. The licensee is given the right to use the software under certain conditions, while restricted from other uses, such as modification, further distribution, or reverse engineering.Complementary...

  web applications that users may be familiar with. Most of this software is server-side
Server-side
Server-side refers to operations that are performed by the server in a client–server relationship in computer networking.Typically, a server is a software program, such as a web server, that runs on a remote server, reachable from a user's local computer or workstation...

 software, often running on a web server
Web server
Web server can refer to either the hardware or the software that helps to deliver content that can be accessed through the Internet....

.
Application Service Date of recent stable release / release # License Requirements Similar proprietary
Proprietary software
Proprietary software is computer software licensed under exclusive legal right of the copyright holder. The licensee is given the right to use the software under certain conditions, while restricted from other uses, such as modification, further distribution, or reverse engineering.Complementary...

 web application(s)
Gallery
Gallery Project
Gallery is an open source project enabling management and publication of digital photographs and other media through a PHP-enabled web server. Photo manipulation includes automatic thumbnails, resizing, rotation, and flipping, among other things...

Photo sharing
Photo sharing
Photo sharing is the publishing or transfer of a user's digital photos online, thus enabling the user to share them with others . This function is provided through both websites and applications that facilitate the upload and display of images...

April 2011 / 3.0.2 GPL 3 MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

flickr
Flickr
Flickr is an image hosting and video hosting website, web services suite, and online community that was created by Ludicorp in 2004 and acquired by Yahoo! in 2005. In addition to being a popular website for users to share and embed personal photographs, the service is widely used by bloggers to...

, Picasa
Picasa
Picasa is an image organizer and image viewer for organizing and editing digital photos, plus an integrated photo-sharing website, originally created by Idealab in 2002 and owned by Google since 2004. "Picasa" is a blend of the name of Spanish painter Pablo Picasso, the phrase mi casa for "my...

Piwigo Photo sharing
Photo sharing
Photo sharing is the publishing or transfer of a user's digital photos online, thus enabling the user to share them with others . This function is provided through both websites and applications that facilitate the upload and display of images...

July 2011 / 2.2.4 GPL
GNU General Public License
The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 + PHP
PHP
PHP is a general-purpose server-side scripting language originally designed for web development to produce dynamic web pages. For this purpose, PHP code is embedded into the HTML source document and interpreted by a web server with a PHP processor module, which generates the web page document...

flickr
Flickr
Flickr is an image hosting and video hosting website, web services suite, and online community that was created by Ludicorp in 2004 and acquired by Yahoo! in 2005. In addition to being a popular website for users to share and embed personal photographs, the service is widely used by bloggers to...

, Picasa
Picasa
Picasa is an image organizer and image viewer for organizing and editing digital photos, plus an integrated photo-sharing website, originally created by Idealab in 2002 and owned by Google since 2004. "Picasa" is a blend of the name of Spanish painter Pablo Picasso, the phrase mi casa for "my...

Flowplayer video streaming March 2011 / 3.2.7 GPL 3 YouTube
YouTube
YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos....

Plumi
Plumi
Plumi is a free software video sharing content management system based on Plone and primarily developed by the Asia-Pacific based EngageMedia, the Greece based Unweb.me consultancy, Infinite Recursion, and others. Plumi allows users to create a video sharing site by adding it to an existing Plone...

video streaming 02 July 2011 / 4.2.2 ZPL
Zope Public License
Zope Public License is a free software license, used primarily for the Zope application server software. The license is similar to the well-known BSD license, however the ZPL also adds clauses prohibiting trademark use and requiring documentation of all changes.-External links:* v2.0 at the Open...

YouTube
YouTube
YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos....

Libre.fm
Libre.fm
Libre.fm is a music community website that aims to provide a Free Software replacement for last.fm. The website was founded in 2009 by Matt Lee. It is under active development....

music streaming AGPL PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

 or MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

last.fm
Last.fm
Last.fm is a music website, founded in the United Kingdom in 2002. It has claimed 30 million active users in March 2009. On 30 May 2007, CBS Interactive acquired Last.fm for UK£140m ....

CiteSeerX
CiteSeerX
CiteSeerX is a public search engine and digital library and repository for scientific and academic papers with a focus on computer and information science. It is loosely based on the previous CiteSeer search engine and digital library and is built with a new open source infrastructure, SeerSuite,...

Bibliographic database
Bibliographic database
A bibliographic database is a database of bibliographic records, an organized digital collection of references to published literature, including journal and newspaper articles, conference proceedings, reports, government and legal publications, patents, books, etc...

October 2010 / 0.12 Apache
Apache License
The Apache License is a copyfree free software license authored by the Apache Software Foundation . The Apache License requires preservation of the copyright notice and disclaimer....

MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

SpringerLink
Openstreetmap
OpenStreetMap
OpenStreetMap is a collaborative project to create a free editable map of the world. Two major driving forces behind the establishment and growth of OSM have been restrictions on use or availability of map information across much of the world and the advent of inexpensive portable GPS devices.The...

mapping
Cartography
Cartography is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.The fundamental problems of traditional cartography are to:*Set the map's...

CC
Creative Commons
Creative Commons is a non-profit organization headquartered in Mountain View, California, United States devoted to expanding the range of creative works available for others to build upon legally and to share. The organization has released several copyright-licenses known as Creative Commons...

MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

Google Maps
Google Maps
Google Maps is a web mapping service application and technology provided by Google, free , that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit, and maps embedded on third-party websites via the Google Maps API...

Tahoe Least-Authority Filesystem
Tahoe Least-Authority Filesystem
The Tahoe Least-Authority Filesystem is an open source, secure, decentralized, fault-tolerant, peer-to-peer filesystem. It is being used as an online backup system by . It can also serve as a file or web host similar to Freenet, depending on the front-end used to insert and access files in the...

file sharing
File sharing
File sharing is the practice of distributing or providing access to digitally stored information, such as computer programs, multimedia , documents, or electronic books. It may be implemented through a variety of ways...

January 2011 / v1.8.2 GPL 2 + DropBox
Dropbox
Dropbox was a five-piece American rock band formed in 2002. The group had one minor hit song in "Wishbone" which received some air time on MTV2 and Fuse and was featured in TV commercials...

, drop.io
Drop.io
Drop.io was an online file sharing service. It allowed users to quickly create "drops", which could contain files of any type, and could be accessed via the internet, e-mail, phone, fax, and widgets. The service did not require users to sign up for an account, and each drop was private unless the...

, Ubuntu One
Ubuntu One
Ubuntu One is a personal cloud service operated by Canonical Ltd.The service enables users to store files online and sync them between computers and mobile devices, as well as stream audio and music from cloud to mobile devices.- Features :...

iFolder
IFolder
iFolder is an open source application, developed by Novell, Inc., intended to allow cross-platform file sharing across computer networks.iFolder operates on the concept of shared folders, where a folder is marked as shared and the contents of the folder are then synchronized to other computers over...

file sharing
File sharing
File sharing is the practice of distributing or providing access to digitally stored information, such as computer programs, multimedia , documents, or electronic books. It may be implemented through a variety of ways...

June 2010 / 3.8.0.3 GPL 2 + DropBox
Dropbox
Dropbox was a five-piece American rock band formed in 2002. The group had one minor hit song in "Wishbone" which received some air time on MTV2 and Fuse and was featured in TV commercials...

, drop.io
Drop.io
Drop.io was an online file sharing service. It allowed users to quickly create "drops", which could contain files of any type, and could be accessed via the internet, e-mail, phone, fax, and widgets. The service did not require users to sign up for an account, and each drop was private unless the...

, Ubuntu One
Ubuntu One
Ubuntu One is a personal cloud service operated by Canonical Ltd.The service enables users to store files online and sync them between computers and mobile devices, as well as stream audio and music from cloud to mobile devices.- Features :...

AbiCollab
AbiWord
AbiWord is a free and open source software word processor. It was originally started by SourceGear Corporation as the first part of a proposed AbiSuite. Development stopped when SourceGear changed their focus to Internet appliances. AbiWord was adopted by some open source developers and AbiWord...

Online file editing 2009 / ? GPL 2 MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

Google Docs
Etherpad
EtherPad
Etherpad is a web-based collaborative real-time editor, allowing authors to simultaneously edit a text document, and see all of the participants' edits in real-time, with the ability to display each author's text in their own color...

Online file editing October 2010 / 1.1 Apache MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

Google Docs
Eucalyptus (computing)
Eucalyptus (computing)
Eucalyptus is a software platform for the implementation of private cloud computing on computer clusters. There is an open-core enterprise edition and an open-source edition. Currently, it exports a user-facing interface that is compatible with the Amazon EC2 and S3 services but the platform is...

Virtual machine provisioning ? / 2.0.2 GPL 3 Amazon EC2
Globus Toolkit
Globus Toolkit
The Globus Toolkit, currently at version 5, is an open source toolkit for building computing grids developed and provided by the Globus Alliance.-Standards implementation:The Globus Toolkit is an implementation of the following standards:...

Virtual machine provisioning May 2011 / 5.0.4 Apache + MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

Amazon EC2
OpenNebula
OpenNebula
OpenNebula is an open-source cloud computing toolkit for managing heterogeneous distributed data center infrastructures. The OpenNebula toolkit manages a data center's virtual infrastructure to build private, public and hybrid IaaS clouds...

Virtual machine provisioning March 2011 / 2.2.0 Apache SQLite3 Amazon EC2
DokuWiki
DokuWiki
DokuWiki is a wiki application aimed at small companies’ documentation needs. DokuWiki is licensed under GPL 2 and written in the programming language PHP. It works on plain text files and thus needs no database. Its syntax is similar to the one used by MediaWiki.-History:DokuWiki was created by...

Wiki
Wiki
A wiki is a website that allows the creation and editing of any number of interlinked web pages via a web browser using a simplified markup language or a WYSIWYG text editor. Wikis are typically powered by wiki software and are often used collaboratively by multiple users. Examples include...

January 2011 / 2.0 GPL 2 Wikispaces
Wikispaces
Wikispaces is a hosting service based in San Francisco, California. Launched in March 2005, Wikispaces is owned by Tangient LLC and is among the largest wiki hosts, competing with PBworks, Wetpaint, Wikia, and Google Sites .Private wikis with advanced features for businesses, non-profits and...

Mediawiki
MediaWiki
MediaWiki is a popular free web-based wiki software application. Developed by the Wikimedia Foundation, it is used to run all of its projects, including Wikipedia, Wiktionary and Wikinews. Numerous other wikis around the world also use it to power their websites...

Wiki
Wiki
A wiki is a website that allows the creation and editing of any number of interlinked web pages via a web browser using a simplified markup language or a WYSIWYG text editor. Wikis are typically powered by wiki software and are often used collaboratively by multiple users. Examples include...

June 2011 / 1.17.0 GPL 2 MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

Wikispaces
Wikispaces
Wikispaces is a hosting service based in San Francisco, California. Launched in March 2005, Wikispaces is owned by Tangient LLC and is among the largest wiki hosts, competing with PBworks, Wetpaint, Wikia, and Google Sites .Private wikis with advanced features for businesses, non-profits and...

Open Journal Systems
Open Journal Systems
Open Journal Systems is an open-source software for the management of peer-reviewer academic journals, created by the Public Knowledge Project, released under the GNU General Public License.-Design:...

publication management Feb 2011, 2.3.4 GPL 2 MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

WordPress
WordPress
WordPress is a free and open source blogging tool and publishing platform powered by PHP and MySQL. It is often customized into a content management system . It has many features including a plug-in architecture and a template system. WordPress is used by over 14.7% of Alexa Internet's "top 1...

blogging April 2011 / 3.1.2 GPL 2 MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

blogger.com
LiveJournal
LiveJournal
LiveJournal is a virtual community where Internet users can keep a blog, journal or diary. LiveJournal is also the name of the free and open source server software that was designed to run the LiveJournal virtual community....

blogging ? / 78.3 blogger.com
Jaiku
Jaiku
Jaiku is a social networking, micro-blogging and lifestreaming service comparable to Twitter. Jaiku was founded in February 2006 by Jyri Engeström and Petteri Koponen from Finland and launched in July of that year...

blogging March 2009, / ? GPL 2 blogger.com
StatusNet microblogging
Microblogging
Microblogging is a broadcast medium in the form of blogging. A microblog differs from a traditional blog in that its content is typically smaller in both actual and aggregate file size...

? / 1.0 b2 AGPL 3 MySQL
MySQL
MySQL officially, but also commonly "My Sequel") is a relational database management system that runs as a server providing multi-user access to a number of databases. It is named after developer Michael Widenius' daughter, My...

 or PostgreSQL
PostgreSQL
PostgreSQL, often simply Postgres, is an object-relational database management system available for many platforms including Linux, FreeBSD, Solaris, MS Windows and Mac OS X. It is released under the PostgreSQL License, which is an MIT-style license, and is thus free and open source software...

twitter
Twitter
Twitter is an online social networking and microblogging service that enables its users to send and read text-based posts of up to 140 characters, informally known as "tweets".Twitter was created in March 2006 by Jack Dorsey and launched that July...

Piwik
Piwik
Piwik is an open source web analytics system written by a team of international developers, and runs on a PHP/MySQL webserver. Piwik is used by over 250,000 websites and is translated in more than 45 languages....

web analytics
Web analytics
Web analytics is the measurement, collection, analysis and reporting of internet data for purposes of understanding and optimizing web usage....

April 2011 / 1.4 GPL 3 google analytics
Google Analytics
Google Analytics is a free service offered by Google that generates detailed statistics about the visitors to a website. The product is aimed at marketers as opposed to webmasters and technologists from which the industry of web analytics originally grew. It is the most widely used website...

AppScale
AppScale
AppScale is an open-source framework for running Google App Engine applications. It is an implementation of a cloud computing platform , supporting Xen, KVM, Amazon EC2 and Eucalyptus. It has been developed and is maintained by the RACELab at UC Santa Barbara.AppScale allows users to upload...

Virtual web hosting July 2011 / 1.5 BSD Google AppEngine
Zimbra
Zimbra
Zimbra Collaboration Suite is a groupware product created by Zimbra, Inc., located in Palo Alto, California, USA. The company was purchased by Yahoo! in September 2007, and subsequently purchased by VMware on Tuesday, January 12, 2010. The software consists of both client and server components...

Online office suite April 2011 / 7.1 Zimbra Google Docs, 30 Boxes
30 Boxes
-Features:The website supports drag-and-drop capabilities, one-click editing, plain-language event adding, as well as unique features aimed towards social networkers. Calendars can contain feeds from Twitter, Blogger, MySpace, Facebook, WordPress, Vox, and Upcoming.org, which generates a social...

, Google calendar
Google Calendar
Google Calendar is a free time-management web application offered by Google. It became available on April 13, 2006, and exited the beta stage in July 2009...

PHPGroupware
PhpGroupWare
phpGroupWare, formerly known as webdistro, is a multi-user groupware suite written in PHP and part of the DotGNU project. It provides about 50 web-based applications including a Calendar, Addressbook, an advanced Projects manager, Todo List, Email, and File manager.The calendar supports repeating...

Online office suite Google Docs,
FengOffice Online office suite Google Docs,
Etherpad
EtherPad
Etherpad is a web-based collaborative real-time editor, allowing authors to simultaneously edit a text document, and see all of the participants' edits in real-time, with the ability to display each author's text in their own color...

Online office suite October 2010/ v1.1 Apache
Apache License
The Apache License is a copyfree free software license authored by the Apache Software Foundation . The Apache License requires preservation of the copyright notice and disclaimer....

 / BSD / LGPL / GPL 2
Google Docs,
Roundcube
RoundCube
Roundcube is a web-based IMAP email client written in the PHP programming language. Roundcube's most prominent feature is the pervasive use of Ajax technology to present a more fluid and responsive user interface than that of traditional webmail clients...

WebMail ? / 0.5.2 gmail
Gmail
Gmail is a free, advertising-supported email service provided by Google. Users may access Gmail as secure webmail, as well via POP3 or IMAP protocols. Gmail was launched as an invitation-only beta release on April 1, 2004 and it became available to the general public on February 7, 2007, though...

 hotmail
Hotmail
Windows Live Hotmail, formerly known as MSN Hotmail and commonly referred to simply as Hotmail, is a free web-based email service operated by Microsoft as part of its Windows Live group. It was founded by Sabeer Bhatia and Jack Smith and launched in July 1996 as "HoTMaiL". It was one of the first...

Funambol
Funambol
Funambol is an American corporation that earns revenue from its dual-licensing business model that includes commercial software and free open source mobile data synchronization software based on the Funambol core project.-Funambol-based companies:...

WebMail ? / 9.0.0 AGPL gmail
Gmail
Gmail is a free, advertising-supported email service provided by Google. Users may access Gmail as secure webmail, as well via POP3 or IMAP protocols. Gmail was launched as an invitation-only beta release on April 1, 2004 and it became available to the general public on February 7, 2007, though...

 hotmail
Hotmail
Windows Live Hotmail, formerly known as MSN Hotmail and commonly referred to simply as Hotmail, is a free web-based email service operated by Microsoft as part of its Windows Live group. It was founded by Sabeer Bhatia and Jack Smith and launched in July 1996 as "HoTMaiL". It was one of the first...

Xuheki
Xuheki
Xuheki is a web-based IMAP client written in Perl. It is completely build upon Ajax technology, i.e. there are no page reloads. Xuheki is released under the GNU General Public License but includes DynarchLIB which is not free software. It uses persistent IMAP connections...

WebMail March 2009 / 0.4 GPL 3 gmail
Gmail
Gmail is a free, advertising-supported email service provided by Google. Users may access Gmail as secure webmail, as well via POP3 or IMAP protocols. Gmail was launched as an invitation-only beta release on April 1, 2004 and it became available to the general public on February 7, 2007, though...

 hotmail
Hotmail
Windows Live Hotmail, formerly known as MSN Hotmail and commonly referred to simply as Hotmail, is a free web-based email service operated by Microsoft as part of its Windows Live group. It was founded by Sabeer Bhatia and Jack Smith and launched in July 1996 as "HoTMaiL". It was one of the first...

Squirrelmail
SquirrelMail
SquirrelMail is an Open Source project that provides both a web-based email application and an IMAP proxy server.The webmail portion of the project was started by Nathan and Luke Ehresman in 1999 and is written in the PHP scripting language...

WebMail gmail
Gmail
Gmail is a free, advertising-supported email service provided by Google. Users may access Gmail as secure webmail, as well via POP3 or IMAP protocols. Gmail was launched as an invitation-only beta release on April 1, 2004 and it became available to the general public on February 7, 2007, though...

 hotmail
Hotmail
Windows Live Hotmail, formerly known as MSN Hotmail and commonly referred to simply as Hotmail, is a free web-based email service operated by Microsoft as part of its Windows Live group. It was founded by Sabeer Bhatia and Jack Smith and launched in July 1996 as "HoTMaiL". It was one of the first...

Mailman mailing lists ? / 2.1.14 GPL
GNU General Public License
The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....

Google Groups
Google Groups
Google Groups is a service from Google Inc. that supports discussion groups, including many Usenet newsgroups, based on common interests. The service was started in 1995 as Deja News, and was transitioned to Google Groups after a February 2001 buyout....

, Yahoo Groups
FluxBB
FluxBB
FluxBB is a lightweight free software PHP-based internet discussion board system. FluxBB is a fork of the PunBB project, created in response to developers protesting the increasing emphasis of a partnership with a corporate organization on the PunBB project...

forum
Internet forum
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are at least temporarily archived...

? / 1.4.5 GPL 2
phpBB
PhpBB
phpBB is a popular Internet forum package written in the PHP scripting language. The name "phpBB" is an abbreviation of PHP Bulletin Board...

forum
Internet forum
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are at least temporarily archived...

? / 3.0.9 GPL 2
Phorum
Phorum
Phorum is an open source message board system written in PHP.-History:In April 1998, Brian Moon developed three scripts that would meet the basic needs of . With 30 days of testing, the code was prepared enough to put into production. It was named WebThreads, though this name was later found to...

forum
Internet forum
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are at least temporarily archived...

? / 5.2.16 Phorum 2.0
Vanilla
Vanilla (forum)
vanilla is a light weight Internet forum package written in the PHP scripting language. It is released under the GNU Licence. Vanilla Forums are open-source, standards-compliant, customizable discussion forums.-Features:...

forum
Internet forum
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are at least temporarily archived...

? / 2.0.17.0 GPL 2
Funambol
Funambol
Funambol is an American corporation that earns revenue from its dual-licensing business model that includes commercial software and free open source mobile data synchronization software based on the Funambol core project.-Funambol-based companies:...

web calendar ? / 9.0.0 AGPLv3 30 Boxes
30 Boxes
-Features:The website supports drag-and-drop capabilities, one-click editing, plain-language event adding, as well as unique features aimed towards social networkers. Calendars can contain feeds from Twitter, Blogger, MySpace, Facebook, WordPress, Vox, and Upcoming.org, which generates a social...

, Google calendar
Google Calendar
Google Calendar is a free time-management web application offered by Google. It became available on April 13, 2006, and exited the beta stage in July 2009...

Openconf
OpenConf
OpenConf is a web-based conference management software system used extensively in computer science and other disciplines. OpenConf has also been adapted for journals, grants and books. The software is provided as a hosted service and for download by Zakon Group LLC....

Submission management system
Submission management system
A submission management system is a software system that streamlines and eases out the collection, tracking and management of electronic submissions...

March 2011 / 4.00
EasyChair
EasyChair
EasyChair is a free web-based conference management software system used extensively in computer science. It is hosted by the computer science department of the University of Manchester....

Submission management system
Submission management system
A submission management system is a software system that streamlines and eases out the collection, tracking and management of electronic submissions...

Limesurvey internet survey SurveyMonkey
SurveyMonkey
SurveyMonkey is a private American company that enables users to create their own web-survey, using free and enhanced paid products and services. The company's offices are located in Palo Alto, California and Portland, Oregon. The company was founded in 1999 by Ryan and Chris Finley...

, Surveytool
Surveytool
SurveyTool is a private American product that enables users to create their own Web-based surveys. The company also conducts survey-related business as . An enhanced paid product and services are also available. The company allows business to conduct research and collect customer feedback online....

, Google Form creator
Cheetah News
Cheetah News
Cheetah News is a free web-based personal news aggregator, capable of reading Atom and RSS feeds online. It was founded in July 2005 by Wojciech Polak...

RSS reader GPL 3 Google Reader
Google Reader
Google Reader is a Web-based aggregator, capable of reading Atom and RSS feeds online or offline. It was released by Google on October 7, 2005 through Google Labs. Reader was graduated from beta status on September 17, 2007.-Interface:...

Identi.ca
Identi.ca
identi.ca is an open source social networking and micro-blogging service. Based on StatusNet, a micro-blogging software package built on the OpenMicroBlogging specification, Identi.ca allows users to send text updates up to 140 characters long...

Social aggregation
Social network aggregation
Social network aggregation is the process of collecting content from multiple social network services, such as MySpace or Facebook. The task is often performed by a social network aggregator, which pulls together information into a single location, or helps a user consolidate multiple social...

0.9.7 AGPL FriendFeed
FriendFeed
FriendFeed is a real-time feed aggregator that consolidates the updates from social media and social networking websites, social bookmarking websites, blogs and micro-blogging updates, as well as any other type of RSS/ Atom feed...

Noserub
Noserub
Noserub is a protocol and reference implementation for a decentralised social network service. Its basic principle is an openness to other social network services so that information can be shared more easily without having to register and actively monitor each one....

Social aggregation
Social network aggregation
Social network aggregation is the process of collecting content from multiple social network services, such as MySpace or Facebook. The task is often performed by a social network aggregator, which pulls together information into a single location, or helps a user consolidate multiple social...

March 2010 / 0.8.2 MIT
MIT License
The MIT License is a free software license originating at the Massachusetts Institute of Technology . It is a permissive license, meaning that it permits reuse within proprietary software provided all copies of the licensed software include a copy of the MIT License terms...

FriendFeed
FriendFeed
FriendFeed is a real-time feed aggregator that consolidates the updates from social media and social networking websites, social bookmarking websites, blogs and micro-blogging updates, as well as any other type of RSS/ Atom feed...

Meneame
Menéame
Menéame is a Spanish social news website based in communitary participation, made for users to discover and share content from anywhere on the Internet, by submitting links and stories and voting and commenting on submitted links and stories...

Social news
Social news
A social news website is a type of website that features user-submitted stories that are ranked based on popularity.-Slashdot:Slashdot, started in 1997, was one of the first social news websites. It focuses mainly on science and technology related news. Users can submit stories, and the editors...

Digg
Digg
Digg is a social news website. Prior to Digg v4, its cornerstone function consisted of letting people vote stories up or down, called digging and burying, respectively. Digg's popularity prompted the creation of copycat social networking sites with story submission and voting systems...

Reddit Social news
Social news
A social news website is a type of website that features user-submitted stories that are ranked based on popularity.-Slashdot:Slashdot, started in 1997, was one of the first social news websites. It focuses mainly on science and technology related news. Users can submit stories, and the editors...

Digg
Digg
Digg is a social news website. Prior to Digg v4, its cornerstone function consisted of letting people vote stories up or down, called digging and burying, respectively. Digg's popularity prompted the creation of copycat social networking sites with story submission and voting systems...

Mixx
Mixx
Mixx is a user-driven social media web site that serves to help users submit or find content by peers based on interest and location. It combines social networking and bookmarking with web syndication, blogging and personalization tools.-Details:...

Social news
Social news
A social news website is a type of website that features user-submitted stories that are ranked based on popularity.-Slashdot:Slashdot, started in 1997, was one of the first social news websites. It focuses mainly on science and technology related news. Users can submit stories, and the editors...

Digg
Digg
Digg is a social news website. Prior to Digg v4, its cornerstone function consisted of letting people vote stories up or down, called digging and burying, respectively. Digg's popularity prompted the creation of copycat social networking sites with story submission and voting systems...

Friendika Distributed social network
Distributed social network
A distributed social network is an Internet social network service that is decentralized and distributed across different providers. The emphasis of the distribution is on portability, interoperability and federation capability...

February 2011 / 2.1 BSD Facebook
Facebook
Facebook is a social networking service and website launched in February 2004, operated and privately owned by Facebook, Inc. , Facebook has more than 800 million active users. Users must register before using the site, after which they may create a personal profile, add other users as...

Diaspora
Diaspora
A diaspora is "the movement, migration, or scattering of people away from an established or ancestral homeland" or "people dispersed by whatever cause to more than one location", or "people settled far from their ancestral homelands".The word has come to refer to historical mass-dispersions of...

Distributed social network
Distributed social network
A distributed social network is an Internet social network service that is decentralized and distributed across different providers. The emphasis of the distribution is on portability, interoperability and federation capability...

AGPL Facebook
Facebook
Facebook is a social networking service and website launched in February 2004, operated and privately owned by Facebook, Inc. , Facebook has more than 800 million active users. Users must register before using the site, after which they may create a personal profile, add other users as...

BuddyPress Distributed social network
Distributed social network
A distributed social network is an Internet social network service that is decentralized and distributed across different providers. The emphasis of the distribution is on portability, interoperability and federation capability...

April 2011 / 3.1.2 GPL WordPress
WordPress
WordPress is a free and open source blogging tool and publishing platform powered by PHP and MySQL. It is often customized into a content management system . It has many features including a plug-in architecture and a template system. WordPress is used by over 14.7% of Alexa Internet's "top 1...

Facebook
Facebook
Facebook is a social networking service and website launched in February 2004, operated and privately owned by Facebook, Inc. , Facebook has more than 800 million active users. Users must register before using the site, after which they may create a personal profile, add other users as...

Elgg
Elgg (software)
Elgg is open source social networking software that provides individuals and organizations with the components needed to create an online social environment. It offers blogging, microblogging, file sharing, networking, groups and a number of other features....

Distributed social network
Distributed social network
A distributed social network is an Internet social network service that is decentralized and distributed across different providers. The emphasis of the distribution is on portability, interoperability and federation capability...

April 2011 / 1.7.8 GPL2 / MIT Facebook
Facebook
Facebook is a social networking service and website launched in February 2004, operated and privately owned by Facebook, Inc. , Facebook has more than 800 million active users. Users must register before using the site, after which they may create a personal profile, add other users as...

Scuttle
Scuttle (software)
Scuttle is a PHP/MySQL-based open source social bookmarking application. It contains code from other PHP-based projects such as Drupal and jQuery.- Functions :...

Social bookmarking
Social bookmarking
Social bookmarking is a method for Internet users to organize, store, manage and search for bookmarks of resources online. Unlike file sharing, the resources themselves aren't shared, merely bookmarks that reference them....

Delicious
Rubric
Rubric
A rubric is a word or section of text which is traditionally written or printed in red ink to highlight it. The word derives from the , meaning red ochre or red chalk, and originates in Medieval illuminated manuscripts from the 13th century or earlier...

Social bookmarking
Social bookmarking
Social bookmarking is a method for Internet users to organize, store, manage and search for bookmarks of resources online. Unlike file sharing, the resources themselves aren't shared, merely bookmarks that reference them....

Delicious
Connotea
Connotea
Connotea is a free online reference management service for scientists, researchers, and clinicians, created in December 2004 by Nature Publishing Group...

Social bookmarking
Social bookmarking
Social bookmarking is a method for Internet users to organize, store, manage and search for bookmarks of resources online. Unlike file sharing, the resources themselves aren't shared, merely bookmarks that reference them....

Delicious
Shiftspace
Shiftspace
ShiftSpace is an open-source metaweb or web annotation application and framework that allows altering web pages with different tools. The tagline of the application is "an open source layer above any web page"...

Social bookmarking
Social bookmarking
Social bookmarking is a method for Internet users to organize, store, manage and search for bookmarks of resources online. Unlike file sharing, the resources themselves aren't shared, merely bookmarks that reference them....

Delicious
Ma.gnolia 2 Social bookmarking
Social bookmarking
Social bookmarking is a method for Internet users to organize, store, manage and search for bookmarks of resources online. Unlike file sharing, the resources themselves aren't shared, merely bookmarks that reference them....

Delicious
OpenID
OpenID
OpenID is an open standard that describes how users can be authenticated in a decentralized manner, eliminating the need for services to provide their own ad hoc systems and allowing users to consolidate their digital identities...

Identity
Identity
-Philosophical topics:* Identity , also called sameness, is whatever makes an entity definable and recognizable* Law of identity, principle of logic stating that an object is the same as itself...

 / credentials
OAuth
OAuth
OAuth is an open standard for authorization. It allows users to share their private resources stored on one site with another site without having to hand out their credentials, typically username and password.OAuth allows users to hand out tokens instead of credentials to their data hosted by a...

Identity
Identity
-Philosophical topics:* Identity , also called sameness, is whatever makes an entity definable and recognizable* Law of identity, principle of logic stating that an object is the same as itself...

 / credentials
Shibboleth
Shibboleth (Internet2)
Shibboleth is an Internet2 project that has created an architecture and open-source implementation for federated identity-based authentication and authorization infrastructure based on Security Assertion Markup Language . Federated identity allows for information about users in one security domain...

Identity
Identity
-Philosophical topics:* Identity , also called sameness, is whatever makes an entity definable and recognizable* Law of identity, principle of logic stating that an object is the same as itself...

 / credentials
CACert.org
CAcert.org
CAcert.org is a community-driven certificate authority that issues free public key certificates to the public...

Encryption
Encryption
In cryptography, encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information...

Phantom Anonymity Protocol
Phantom Anonymity Protocol
The Phantom anonymity protocol was designed in 2008 by Swedish security researcher Magnus Bråding to provide anonymity optimized for the current conditions and needs of average internet users. The design goal was feasibility for mass adoption as a de facto internet anonymization standard...

Apertium
Apertium
Apertium is a rule-based machine translation platform. It is free software and released under the terms of the GNU General Public License.-History:...

Translation
Translation
Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. Whereas interpreting undoubtedly antedates writing, translation began only after the appearance of written literature; there exist partial translations of the Sumerian Epic of...

September 21, 2010 /3.2 GPL2 Google Translator
EyeOS
EyeOS
eyeOS is an open source web desktop following the cloud computing concept that seeks to enable collaboration and communication among users. It is mainly written in PHP, XML, and JavaScript. It acts as a platform for web applications written using the eyeOS Toolkit. It includes a Desktop environment...

Homepage
Homepage
A home page or homepage has various related meanings to do with web sites:* It most often refers to the initial or main web page of a web site, sometimes called the front page ....

iGoogle
IGoogle
iGoogle , a service of Google, is a customizable Ajax-based startpage or personal web portal . Google originally launched the service in May 2005...

, netbives
OpenCroquet Virtual World
Virtual world
A virtual world is an online community that takes the form of a computer-based simulated environment through which users can interact with one another and use and create objects. The term has become largely synonymous with interactive 3D virtual environments, where the users take the form of...

SecondLife
OpenSimulator
OpenSimulator
OpenSimulator is an open-source server platform for hosting virtual worlds. It is compatible with the client for Second Life and can host alternative worlds with differing feature sets with multiple protocols.-Features:...

Virtual World
Virtual world
A virtual world is an online community that takes the form of a computer-based simulated environment through which users can interact with one another and use and create objects. The term has become largely synonymous with interactive 3D virtual environments, where the users take the form of...

SecondLife

Other lists of free software web applications

  • List of free software applications in the FreedomBox
    FreedomBox
    FreedomBox is a community project to develop, design and promote personal servers running free software for distributed social networking, email and audio/video communications...

    project
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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