GRZip - is a high-performance file compressor based on Burrows-Wheeler Transform and Advanced Weighted Frequency Counting. It uses The Block-Sorting Lossless Data Compression Algorithm, which has received considerable attention over recent years for both its simplicity and effectiveness. This implementation has compression rate of 2.364 bps on the Calgary Corpus. The site has Windows, Linux, and Dos executables along with source.

http://magics.h10.ru/main.php?page=GRZip&folder=projects