Download (+changelog)

 20 Sep 2003 ctxf_075_pre.zip ( 120 175 bytes ) - pre-release of CTXf 0.75 beta 1. Command-line only.

Beta 1 (27 Sep 2003):

 Added switch to force ByteSwap filter off; on some files it hurts compression rate extremely

Beta 0:

 Moved to a faster compiler (Intel C/C++ 6.0)

 Added space stuffing to text filter

 Added microdisassembler to IA-32 exe filter

 Added order-3 LPC for sound compression

 Added order-2 ADSM for multimedia compression

 Improved LZP layer

 Added "Quickest" and "Extreme" methods

 Added segmenter

 Improved build-in detection for executables, text & multimedia

 Added support for solid-block compression

 Get rid of high order contexts hash - it gives very small advantage in speed.

 Get rid of header compression routine - the average overhead is too small.

 09 Mar 2003 ctxf_069.zip ( 814 782 bytes ) - full distributive of CTXf 0.69 for Windows

 Rewritten PPMII core. Now it is based on ternary tree, with a separate hash for faster high-order contexts searching

 Changed internal archive format

 Added simple text, delta, low-redundant & E8/E9 preprocessors

 Added recency scaling

 Added header compression.

 10 Dec 2002  CTXf 0.61 for Windows

 Fixed a really silly bug in CRC32 computation

 Tuned SEE a bit

 Added low-redundancy filter

 22 Oct 2002  CTXf 0.55 for Windows

 Added PPMd's information inheritance, SEE & update mechanism

 Added archiving support - it is no more single-file compressor!

 17 Aug 2002  ONE 0.01

Order-5 PPMXC, based on HA's context storage. Actually first CTXf's version. Compresses slightly worse than BZip2.