File Compression

ZipGenius is a freeware file archiver developed by M.Dev Software. Supports more than 20 compressed archive formats, including CD/DVD-ROM image files in ISO9660 standard. This is the file compression suite you were searching for: it is free and easy to use, plus it supports more than 20 formats of compressed archives, including RAR, ARJ, ACE, CAB, SQX, OpenOffice.org documents and the excellent 7-zip.
ZipGenius Features:
- Compress files to almost any kind of archive
- Full customization and integration in Windows Explorer
- Precompress executable files going to be added to a ZIP archive through the UPX compressor
- Zips and unzip large files
- Supports the creation of self-extracting exe files
- Drag-and-drop support
- Zip encryption and decryption
- Ability to send archives via e-mail
- Web publishing of archives and files via FTP
- Support for OpenOffice and more
WinRAR 3.80 for Mac OS X

RAR for Mac OS X is a compression software developed by RarLab. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files format: .ARJ, .CAB, .LZH, .TAR, .ACE, .GZ, .UUE, .BZ2, .JAR and .ISO
RAR for Mac OS X Features:
- Pack and unpack RAR files
- create and change SFX archives
- create a multi-volume archive
- protect files with password
- add archive and file comments
- Repair damaged archives
WinRAR 3.80 beta 3: Compression/decompression software

WinRAR is a powerful archive manager. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format. it supports RAR and ZIP archives, and unpacking of ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7z and Z archives.
WinRAR Features:
- Create RAR and ZIP archives
- Create backups
- Reduce file size
- Reconstruct damaged archives
- Create selfextracting archives
- create multivolume archives
- Encript file with password
- Split large files