zpipe v1.00, a simple streaming compressor, Sept. 30, 2009. Linux patch added Jan. 18, 2010.
zp v1.00 simple ZPAQ compatible archiver with 3 optimized compression levels, Apr. 26, 2010.
libzpaq 0.01, Sept. 27, 2010.
libzpaq 0.02, Sept. 28, 2010.
zpipe 2.00 updated to use libzpaq 0.02, Sept. 28, 2010.
libzpaq 1.00, Sept. 29, 2010. Package includes libzpaq, ZPAQ specification, reference decoder, zp, zpipe, and fast, mid, max config files.
libzpaq 1.01, Oct. 14, 2010. Updates libzpaq interface to use inheritance instead of templates, requiring changes to zp and zpipe. Now compiles faster.
libzpaq 1.02, Oct. 20, 2010. Adds zpsfx self extracting archive stub. Separates optimized models from libzpaq.cpp to libzpaqo.cpp.
zpaq v2.00, Oct. 30, 2010. Ports zpaq to libzpaq, replacing zp.
zpaq v2.01, Nov. 5, 2010. Added optimized self extracting archives. Simplified installation.
zpaq v2.02, Nov. 13, 2010. zpaq shows compression component statistics. Libzpaq support added.
zpaq v2.03, Dec. 23, 2010, adds Linux support. The remaining code is split into libzpaq 2.02, zpipe 2.01, zpsfx 1.00, and configuration files min, fast, mid, and max.
zpaq v2.04, Dec.29, 2010, adds support for Visual C++, Borland, and Mars compilers in addition to g++. A Windows install script is added.
zpaq v2.05, Jan. 5, 2011. Fixed a bug in which zpaq crashed when decompressing an unnamed file (as created with zpipe or zpaq nc) without renaming. Separated zpaq.1.pod. (Updated corrupted install.sh on Jan. 13, 2011).
libzpaq 2.02a, Jan. 6, 2011. Updates the documentation.
pzpaq 0.01 parallel file compressor, Jan. 21, 2011.
pzpaq 0.02, Jan. 26, 2011, adds large file support (over 2 GB) to Windows.
pzpaq 0.03, Feb. 2, 2011, optimizes decompression for nonstandard compression levels by recompiling itself with g++ (like "zpaq ox").
pzpaq 0.04, Feb. 4, 2011, Windows version uses native threads and no longer requires pthreads-win32.
pzpaq 0.05, Feb. 10, 2011 removes -s option, puts temporary files in $TMPDIR or %TEMP%.