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Commandline ACE is an archiving program with its own powerful "ACE" compression format and built-in support for other common archive format types such as ARJ, RAR, ZIP, and partially LZH. Program distribution contains both Commandline ACE and UnACE decompressor. Both programs are in versions for DOS, OS/2 and Windows, and has support for Long File Names. Despite of its name, Commandline ACE contains full fledged Norton Commander-like interface and can be run both in commandline and fullscreen mode. UnACE can be run only in commandline mode. Commandline ACE can be too used for file manipulation, similar to that in Norton Commander.