Downloads

The current stable version is 1.0.5, released 17 March 2008. This removes a potential security vulnerability (CERT-FI 20469 as it applies to bzip2) present in versions 1.0.4 and earlier. All users should upgrade to 1.0.5 immediately.

Here is the 1.0.5 source tarball , which includes full documentation.
md5: 3c15a0c8d1d3ee1c46a1634d00617b1a

If you can be bothered, please email me to say you've got a copy. It's nice to know where this stuff gets to.

Executables for 1.0.5

Nowadays bzip2 ships as standard on many Unix / Linux systems. If you're using one of those, it might be worth checking if it is already installed, or is present on the installation media.

Here is an executable for Microsoft Windows (32-bit, built on Windows 2000 SP4) ,
md5: 92af3c3842f8d55f4317d6c4c621c3c0

Please note, this is a command line program. If you download it and then click on it, what you get is a window which appears and then instantly disappears. You need to run it from within a Command Prompt window. At least on Windows 2000, you can get one from Start -> Programs -> Accessories -> Command Prompt.

A Windows executable for the associated bzip2recover program is also available.
md5: 596b64104dabc020684ffbcb85b14303

bzip2 is very portable. It should run on practically any 32 or 64 bit computer, if you have enough spare memory (at least 8 megabytes). If you have an ANSI C compiler, you have a very good chance of building a working executable from the sources with minimal difficulty.