The Unarchiver
| The Unarchiver | |
|---|---|
| Original author | Dag Ågren |
| Developers | Circlesoft, MacPaw |
| Initial release | September 2006 |
| Stable release | 4.3.8
/ 16 May 2024 |
| Operating system | macOS, Linux using GNUstep libraries, and command line only on Microsoft Windows, Linux, macOS |
| Available in | 18 languages |
List of languages English, Arabic, Bulgarian, Czech, Dutch, French, German, Hungarian, Italian, Japanese, Latvian, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish | |
| Type | File Extractor / Decompressor |
| License | Proprietary since acquisition Formerly LGPLv2.1-or-later |
| Website | theunarchiver |
| Repository | |
The Unarchiver is a free data decompression utility, which supports more formats than Archive Utility (formerly known as BOMArchiveHelper), the built-in archive unpacker program in macOS. It can also handle filenames in various character encodings, created using operating system versions that use those character encodings. The Unarchiver does not compress files.
A key feature of The Unarchiver is its ability to handle many old or obscure Mac OS Classic and Amiga archive formats, including StuffIt, Compact Pro, AmigaOS disk images, and LZH/LZX archives. The source code credits libxad, an Amiga file format library. Utility author Dag Ågren reverse engineered the StuffIt and StuffIt X formats. His work resulted in one of the most complete open source implementations of these proprietary formats.