GnuWin32: Bzip2 1.0.2 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The tool is sometimes referred to as "GnuWin32 Bzip2".
The program lies within System Utilities, more precisely Archivers. We recommend checking the downloaded files with any free antivirus. The following version: 1.0 is the most frequently downloaded one by the program users. This free software is an intellectual property of Julian Seward. Bzip2.exe is the most frequent filename for this program's installer.
From the developer:
bzip2 is a freely available, patent free, high-quality data compressor. It typically compresses files to within 10% to 15% of the best available techniques (the PPM family of statistical compressors), whilst being around twice as fast at compression and six times faster at decompression.
The code is organised as a library with a programming interface. The bzip2 program itself is a client of the library.
You may want to check out more software, such as GnuWin32: GetText, GnuWin32: LibIconv or GnuWin32: PlotUtils, which might be similar to GnuWin32: Bzip2.
File Compression