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.
Oct. 30, 2010. Ports zpaq to libzpaq, replacing zp.
Nov. 5, 2010. Added optimized self extracting archives. Simplified installation.
Nov. 13, 2010. zpaq shows compression component statistics. Libzpaq support added.
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.
Dec.29, 2010, adds support for Visual C++, Borland, and Mars compilers in addition to g++. A Windows install script is added.
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%.
unzp 1.00, May 10, 2011, a block level parallel decompresser optimized for fast, mid, max, bwtrle1, bwt2 models with source level JIT for other models.
zp 1.01, May 12, 2011, a block level parallel compressor with 4 levels (bwtrle1, bwt2, mid, max). With unzp replaces pzpaq.