The Unarchiver
Encyclopedia
The Unarchiver is a free
data decompression
frontend of libxad, which supports more formats than Archive Utility
(formerly known as BOMArchiveHelper), the built-in archive unpacker program in Mac OS X
. It can also handle filenames in foreign character sets, created with non-English versions of other operating system
s. The latest version requires Mac OS X v10.3.9 or higher. It does not compress files.
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...
data decompression
Data compression
In computer science and information theory, data compression, source coding or bit-rate reduction is the process of encoding information using fewer bits than the original representation would use....
frontend of libxad, which supports more formats than Archive Utility
Archive utility
* For archive utility applications in general see file archiver.* For the MAC OS Archive Utility service application see Archive Utility....
(formerly known as BOMArchiveHelper), the built-in archive unpacker program in Mac OS X
Mac OS X
Mac OS X is a series of Unix-based operating systems and graphical user interfaces developed, marketed, and sold by Apple Inc. Since 2002, has been included with all new Macintosh computer systems...
. It can also handle filenames in foreign character sets, created with non-English versions of other operating system
Operating system
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
s. The latest version requires Mac OS X v10.3.9 or higher. It does not compress files.
Supported formats
- ZIPZIP (file format)Zip is a file format used for data compression and archiving. A zip file contains one or more files that have been compressed, to reduce file size, or stored as is...
- RARRAR (file format)RAR stands for Roshal ARchive. It is a proprietary archive file format that supports data compression, error recovery, and file spanning...
- 7z7z7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public...
(.7z) - LHALHA (file format)LHA is a freeware compression utility and associated file format. It was created in 1988 by , and originally named LHarc. A complete rewrite of LHarc, tentatively named LHx, was eventually released as LH. It was then renamed to LHA to avoid conflicting with the then-new MS-DOS 5.0 LH command...
- StuffItStuffItStuffIt is a family of computer software utilities for archiving and compressing files on the Macintosh and Microsoft Windows platforms: it was originally produced for the Macintosh. An old version for Linux and Sun Solaris 2.7 or later is also available...
(.sit, .sitx) - Compact ProCompact ProCompact Pro is a software data compression utility for archiving and compressing files on the Apple Macintosh platform. It was a major competitor to StuffIt in the early 1990s, producing smaller archives in less time, as well as being distributed via shareware which greatly helped its popularity...
(.cpt) - DiskDoublerDiskDoublerDiskDoubler is a data compression utility for compressing files on the Apple Macintosh platform. Unlike most such programs, which compress numerous files into a single archive for transmission, DiskDoubler was intended to compress single files "in place" to save space on the drive...
(.dd) - BinHexBinHexBinHex, short for "binary-to-hexadecimal", is a binary-to-text encoding system that was used on the Mac OS for sending binary files through e-mail. It is similar to Uuencode, but combined both "forks" of the Mac file system together, along with extended file information...
(.hqx) - MacBinaryMacBinaryDue to the metadata-rich nature of the Macintosh Hierarchical File System, transferring Mac OS files to platforms that do not support HFS can be problematic. MacBinary was developed as a means of preserving this structure without sacrificing portability. It combines the data and resource forks...
(.bin) - GzipGzipGzip is any of several software applications used for file compression and decompression. The term usually refers to the GNU Project's implementation, "gzip" standing for GNU zip. It is based on the DEFLATE algorithm, which is a combination of Lempel-Ziv and Huffman coding...
(.gz) - Bzip2Bzip2bzip2 is a free and open source implementation of the Burrows–Wheeler algorithm. It is developed and maintained by Julian Seward. Seward made the first public release of bzip2, version 0.15, in July 1996.-Compression efficiency:...
(.bz2, .tar.bz2, .tbz2, .tb2) - TarTar (file format)In computing, tar is both a file format and the name of a program used to handle such files...
- GNU Tar (.gtar)
- Unix CompressCompressCompress is a UNIX compression program based on the LZC compression method, which is an LZW implementation using variable size pointers as in LZ78.- Description of program :Files compressed by compress are typically given the extension .Z...
(.z) - Unix Compress Tar (.taz, .tar-z)
- CABCabinet (file format)In computing, CAB is the Microsoft Windows native compressed archive format. It supports compression and digital signing, and is used in a variety of Microsoft installation engines: Setup API, Device Installer, AdvPack and Windows Installer.Though Cabinet was originally called Diamond, its .CAB...
- Comic Book (.cbz, .cbr)
- RPMRPM Package ManagerRPM Package Manager is a package management system. The name RPM variously refers to the .rpm file format, files in this format, software packaged in such files, and the package manager itself...
- Self-Extracting Archive (.sea, if the format itself is supported)
- Windows Self-Extracting (.exe)
- CPIOCpiocpio is a general file archiver utility and its associated file format. It is primarily installed on Unix-like computer operating systems. The software utility was originally intended as a tape archiving program as part of the Programmer's Workbench , and has been a component of virtually every...
- Pax (.pax)
- HA (.ha)
- Amiga Disk FileAmiga Disk FileAmiga Disk File aka ADF is a file format used by Amiga computers and emulators to store images of disks. It has been around almost as long as the Amiga itself, although it was not initially called by any particular name. Before it was known as ADF, it was used in commercial game production, backup...
- Amiga DMS Disk Archive (.dms)
- Amiga LhF (.f)
- Amiga LZX (.lzx)
- Amiga DCS Disk Archive (.dcs)
- Amiga PackDev Disk Archive (.pkd)
- Amiga xMash Disk Archive (.xms)
- Amiga Zoom Disk Archive (.zom)