Prosody is a cross-platform

Cross-platform

In computing, cross-platform, or multi-platform, is an attribute conferred to computer software or computing methods and concepts that are implemented and inter-operate on multiple computer platforms...

 XMPP

Extensible Messaging and Presence Protocol

Extensible Messaging and Presence Protocol is an open-standard communications protocol for message-oriented middleware based on XML . The protocol was originally named Jabber, and was developed by the Jabber open-source community in 1999 for near-real-time, extensible instant messaging , presence...

 server

Server (computing)

In the context of client-server architecture, a server is a computer program running to serve the requests of other programs, the "clients". Thus, the "server" performs some computational task on behalf of "clients"...

 written in Lua. Its development goals include low resource usage, ease-of-use, and extensibility.

History

Prosody development was started by Matthew Wild in August 2008 and its first release, 0.1.0, was made in December 2008.

Prosody was initially licensed under the GNU General Public License

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....

 (version 2), but later switched to the MIT License

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...

 in its 3rd release.

Notable deployments

The XMPP Standards Foundation runs Prosody on xmpp.org, and uses the chatroom feature for meetings for various XSF teams.

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...

 the micro-blogging service uses Prosody to deliver IM notifications.

Remember the Milk

Remember The Milk

Remember the Milk is an application service provider for web-based task- and time-management. It allows users to manage tasks from computer as well as offline. It is being developed by an Australian/international team.- Features :...

 uses Prosody to deliver IM based reminders.

Collabora

Collabora

Collabora Ltd. is a private company founded by Robert McQueen, Robert Taylor and Philippe Kalaf based in Cambridge, United Kingdom, with offices in Cambridge, Montreal and Barcelona. Collabora's mission is to make Open Source the de-facto standard in the industry. It does this by providing...

 runs Prosody on proxies.telepathy.im to provide a default file transfer proxy for Telepathy (and therefore Empathy

Empathy (software)

Empathy is an instant messaging client which supports text, voice, video, file transfers, and inter-application communication over various IM protocols....

).

Peter Saint-Andre (the executive director of the XMPP Standards Foundation

XMPP Standards Foundation

XMPP Standards Foundation is the foundation in charge of the standardization of the protocol extensions of XMPP, the open standard of instant messaging and presence of the IETF.- History :...

) has run Prosody on http://stpeter.im.