The following files are also binary files, but have been compressed and require a utility to decompress them before they can be used. Sometimes, the programs that will uncompress them will only be able to run on one kind of computer (DOS, Mac, Amiga, Atari)

Ext. Program Used to Compress Notes Ext. Program Used to Compress Notes .arc ARC, PKARC, or PKPAK Used on DOS, Atari, and other computers .lha File compressed by LHarc capable program Used on DOS, Amiga and Atari machines. .arj ARJ Used on DOS computers .lhs .ark PowerDesk Pro, Managing Your Money, Quark, and others Archive File .lzh  .b64 Various Base 64 Mime Encoded File Archive .rar Rar program Used on DOS and Windows machines, not sure about other operating systems or computers .cab Various Microsoft programs including Windows A Cabinet File; contains files for product installs .sit StuffIt Used on Macintosh computers .cpt CompactPro Used on Macintosh computers .tar TAR pax2exe.zoo .ice ICEOWS and others LHA Archive File .zip PKZip, WinZip, and many others Used on DOS and Windows machines, but versions for other computers exist too .jar Java Archive File .zoo Zoo Used on Unix, DOS, Amiga, and Atari computers.

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