DARK
the universal archiver based on BWT-DC scheme (C) kvark, 2006

Gate: small dark FAQ

• About OpenDark?
  OpenDark is a simplification of dark, which is open source. It had been created with hope that everybody would be able to make some remarks and additions to it and together we make it many time more powerfull it's today! The following developing directions are welcomed:

  1. Coding model improvement up to 2-3%
  2. Other methods combination (LZ,PPM)
  3. Preprocessing techiques

• What the hell it is?
  Dark is a command line block compressor. The scheme BWT-DC means that on the first stage it uses Burrows-Wheeler Transform (see BWT FAQ) and on the second stage it uses Distance Coding (there is no official description, but you can look into http://compression.ru).
  While 'dark' has similar to well-known archivers (ybs,grzipii) compression ratio, it's main advantage is awesome speed.
  Memory requirements: 5N (for some older versions may be 6N), where N = block size. On the most of inputs the more the block - the better is the compression.

• Linked sites?
  The information is scattered around the web...
  OpenDark project page
  BWT FAQ by Vadim Yoockin
  Yuta Mori SA construction contest
  Encode.ru forum 'Dark' section
  Compression.ru forum 'Archon' section
  MaximumCompression contest
  NetStore wave compression