List of compression algorithms
// TODO - this article is not finished yet
JCALG / JCALG1
Signature (ASCII): JC
Signature (HEX): 0x4A 0x43
List of games using this compression: category on the Wiki
Programs supporting it: jcalg1
Open source implementations: jeremycollake/jcalg1
ZLIB
Signature (ASCII): x
Signature (HEX): 0x78
List of games using this compression: ZLIB category on Wiki
Programs supporting it: offzip, quickbms
Open source implementations: madler/zlib