Hi all, Recently I've developed Sqnappy - Squeak/Pharo binding of the snappy compressor library. https://github.com/mumez/sqnappy About snappy: https://code.google.com/p/snappy/ Sqnappy is easy to use. You can just send #compress:, #uncompress to SnappyCore: compressed := SnappyCore compress: data. uncompressed := SnappyCore uncompress: compressed. With a simple test, Sqnappy was 10.8x faster than the existing GZipWriteStream/GZipReadStream. Additionally, Sqnappy implements snappy framing format, so that it can treat big data with a small memory allocation. About framing format: https://code.google.com/p/snappy/source/browse/trunk/framing_format.txt Tested from a workspace, 1.3 GB pg_dump file was compressed in around 10 seconds and decompressed in 6.5 seconds . No annoying GCs. It was comfortable. Enjoy! -- [:masashi | ^umezawa]