Free File Compression Tools

7-Zip

Free compression software for Windows distributed under the GNU LGPL, 7-Zip will pack / unpack 7z, ZIP, GZIP, BZIP2 and TAR; and it will unpack only RAR, CAB, ARJ, LZH, CHM, Z, CPIO, RPM and DEB.

ZipGenius

Free compression software that claims to support more than 20 compressed archive formats, including CD/DVD-ROM image files in ISO9660 standard.

TUGZip

TUGZip is a freeware archiving utility for Windows that provides support for a wide range of compressed, encoded and disc-image files.

QuickZip

This freeare archiver claims to work with 22 encode and encryption formats and 44 archive extensions, including the 7z format.

FreeExtractor

This is a open-source program designed to create self-extracting archives for Windows from existing ZIP files.