7-Zip
7-Zip is a file archiver with high compression ratio.
7-Zip is free software distributed under the GNU LGPL (except for the RAR plugin).
more fromwww.7-zip.org
PeaZip, LGPL free archiver for Windows and Linux: changelog and release map
PeaZip is an open source (LGPL) OS portable archiver, succesfully tested on Windows 98, 2000, XP and Vista and on various Linux systems. It supports many archive formats (7Z, BZ2, GZ, QUAD, PAQ, PEA, TAR, ZIP; reads ARJ, CAB, DEB, ISO, LHA, RAR, RPM etc..
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dBpoweramp
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Musepack
Musepack is an audio compression format with a strong emphasis on high quality. It's not lossless, but it is designed for transparency, so that you won't be able to hear differences between the original wave file and the much smaller MPC file.
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DjVu.org - the premier menu for djvu resources
DjVu (pronounced "déjà vu") is a digital document format with advanced compression technology and high performance value. DjVu allows for the distribution on the Internet and on DVD of very high resolution images of scanned documents, digital documents,
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ICEOWS site Officiel
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xat.com: GIF JPEG Compression software download, JPEG Optimizer, Image Optimiser, Slide Show/Screensaver for PC and TV/DVD/Digital Camera
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ZipGenius.it - Free zip utility for Windows that handles zip, rar, cab, 7-zip archives and CD-ROM ISO9660 image files
ZipGenius is the absolutely free software for Windows® that lets you compress files to almost any kind of archive. ZipGenius supports more than 20 compressed archive formats, including CD/DVD-ROM image files in ISO9660 standard. This is the file compress
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TUGZip - The Free Archiving Utility
TUGZip is a powerful award-winning freeware archiving utility for Windows® that provides support for a wide range of compressed, encoded and disc-image files, as well as very powerful features; all through an easy to use application interface and Windows
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Info-ZIP Home Page
Info-ZIP is a diverse, Internet-based workgroup of about 20 primary authors and over one hundred beta-testers, formed in 1990 as a mailing list hosted by Keith Petersen on the original SimTel site at the White Sands Missile Range in New Mexico.
Info-ZI
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FLAC - Free Lossless Audio Codec
FLAC stands for Free Lossless Audio Codec, an audio format similar to MP3, but lossless, meaning that audio is compressed in FLAC without any loss in quality. This is similar to how Zip works, except with FLAC you will get much better compression because
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zlib Home Site
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7-Zip is free software distributed under the GNU LGPL (except for the RAR plugin).