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.
zp 1.02, May 16, 2011. Fixed -t option. May 18, 2011. Undated zp.102.zip and unzp.100.zip with static x86-64 Linux binaries.
zp 1.03, May 26, 2011. Merges the compressor and decompresser unzp into one program.
wbpe 1.00, June 12, 2011. Dictionary preprocessor for text files.
wbpe 1.10, June 21, 2011.
July 16, 2011. Combines features of zpaq v2.05 and zp v1.03. zp support is discontinued. Windows only.
July 21, 2011. Adds 64 bit Linux support. Includes libzpaq 3.00.
libzpaq 3.00, July 28, 2011, from zpaq v3.01 but as a separate download.
libzpaq 4.00, Nov. 13, 2011. libzpaq.cpp, libzpaq.h, libzpaq.3.pod. Replaces source-level JIT with internal JIT for x86-32 and x86-64.
Nov. 13, 2011. zpaq.cpp, zpaq.1.pod for use with libzpaq 4.00. Removes source generation, b and e commands and -j option.
Nov. 26, 2011. Source code adds incremental update and extraction.