Software Windows!

Small utility to split files to a number of smaller parts.
License: Freeware
OS Support:

Executable compressor for net files with password protection options.
License: Demo
OS Support:

A much-needed powerful tool to repair corrupt RAR archives of any size.
License: Demo
OS Support:

Unzipping (and zipping) made easy.
License: Freeware
OS Support:

RAR Recovery Toolbox recovers data from corrupted RAR archives and files Features: Repair RAR archives Recover password-protected RAR files Repair RAR files larger than 4 GB Restore RAR files from damaged media Fix RAR files over network.
License: Shareware
OS Support: WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98

Repairs affected RAR archives, restores affected checksums, opens damaged files that were corrupted during their download or by any other reason The utility is as easy as the original file compression tool, users may easily open rar archives.
License: Shareware
OS Support: WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98

Tool is designed to recover data from corrupted ZIP files Program can recovers files from ZIP archives and Decompresses damaged zip archives, repairs CRC errors and other issues, caused by either internal or external problems.
License: Shareware
OS Support: WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98

ZIP Recovery Toolbox recovers data from corrupted ZIP files Features: Repair ZIP archives Repair self-extracting (SFX) files Recover password-protected ZIP files Repair ZIP files larger than 4 GB Restore ZIP files from damaged media.
License: Shareware
OS Support: WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98

Handles Rar, Zip, Bz2, Ace, 7z, Iso, Cbr, Cbz, Tar, Cab, Jar, Msi, Pk3, Pak, Lzx.
License: Shareware
OS Support:

Actual Zip Repair efficiently recovers damaged zip files and sfx archives.
License: Shareware
OS Support: