Compressors Comparison Test 6.6 (November 2003)
YBS (high-performance blocksorting compressor)
My small photo gallery

by Yoockin Vadim

Compressors Comparison Test

Best 10 ratings!
List of compressors (A short description of 60 newest state-of-art compressors.)

New compressors:
RKC 1.02 PPMZ, ROLZ, filters
Slim 18 PPM*, filters
Durilca & Durilca light 0.3 PPMII, filters
Epm 9 PPMII, filters
Ctx 0.75b1 PPMII, filters
7Zip 3.11 LZ+Ari, PPMII, filters
Paq3, Paq3n, Paq4 CM
Bee 0.77 CM
PPMy 9a9, Ash02 CM
UHBC 1.0 BWT + WFC,AFWC,direct coding
GCA 0.9k BWT + direct coding

Test file sorted by size sorted by rating Test file size (bytes) Download file
English text file condoyle.txt [view] [view]


737 kb
Russian text file stand.txt [view] [view]


662 kb
Tared sources (Watcom C 10.0 examples) [view] [view]


379 kb
EXE - file (Watcom C 10.0 compiler Wcc386.exe) [view] [view]


306 kb
WinWord file Fileware.doc [view] [view]


122 kb
Excel - file samples.xls [view] [view]


144 kb
Dictionary telephone base file [view] [view]


200 kb
Binary OS2.INI file [view] [view]


117 kb
Archivers Comparison Test Chart Applet by Hard Wisdom (Vladimir Kalashnikov)

YBS (blocksorting compressor)

YBS is a high-performance archiver based on Burrows-Wheeler Transform and distance coding modelling. It's quite fast even on skew data and achives high compression ratio.

  • DOS version (60kB)
  • Win-32 version (43kB)
  • 22.09.2002: version 0.03f. I remember my compressor :)
    - fixed bug appearing while compressing with maximum block size 16Mb (thanks to Sebastian and Szymon).
    - compression ratio is slightly improved

    25.09.2000: version 0.03e
    - fixed DJGPP 2.01 memory allocation bug in DOS version
    - improved sorting of files like kennedy.xls

    Thanks to
    Edgar Binder - for describing me distance coding algorithm,
    Szymon Grabowski - for text tricks (I don't implemented yet :) and testing,
    Aleksandr Ratushnyak, Dmitry Shkarin, Eugene Shelwien, Sebastian Deorowicz, Vladimir Trutnev - for testing.

    I'll be appreciative for suggestions and bug reports.
    e-mail to


    Address and an author
    Juergen Abel
    It is a steadly growing data compresion resource. And it also contains a very interesting BWT-compressor ABC.
    Bernhard Balkenhol
    A several interesting papers about Burrows-Wheeler Transform.
    Sebastian Deorowicz
    A new compression corpus, the papers describing WFC (Weigthed Frequency Count) and other algorithms related to BWT.
    Peter Fenwick
    A classical papers devoted to BWT compression research.
    Mark Nelson
    A powerful data compression site. A lot of usefull compression pointers.
    Last updated: 12-May-2022
    Server size: 8069 files, 1215Mb (
    Server statistics)

    Project updated by
    Server Team and MSU Video Group

    Project sponsored by YUVsoft Corp.

    Project supported by MSU Graphics & Media Lab