The Archive Comparison Test is a set of benchmarks designed to show the state of the art in lossless data compression. It contains benchmarks on various types of data for compression speed, uncompression speed, and compression ratio. The DOS/Windows version of ACT was first published in September 1992. The Macintosh version was first published in December 1999.

• DOS/Windows Compression Tests (162 archivers)
• Macintosh Compression Tests (8 archivers)
• JPEG Compression Tests (11 archivers)

• WHAT'S NEW - The Lastest Information on A.C.T. - Updated: August 9, 2007
• A.C.T. in the NEWS
• INDEX [] of Archivers, FTP Links, Author E-mail [DOS/Windows]
• INDEX of Archivers, FTP Links, Author E-mail [Macintosh]
• My PERSONAL home page

For more information about data compression, check out Compression Links Info and the Data Compression Library.

• ACT 2.0 research and web pages by Jeff Gilchrist [], Copyright ©1992-2007.
• ACT title graphic designed by Chris MacPherson [] and animated by another friend Chris.
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