Web Image Guru Suite 

Web Image Guru is a powerful graphics suite for everyone who need to optimize image color and tonal balance, sharpness, noise level, geometry, bit depth, and file size.
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ZipZag 

Handles archives of most formats: Zip, 7Zip, Ace, Arc, Arj, Bin, Bz2, Bzip2, Cab, Cpio, Deb, Gca, Gzip, Hqx, Ice, Jar, Lha, Lzh, Ntx, Pak, Pk3, Rar, Rpm, Sqx, Tar, Taz, Tbz2, Tgz, Wad, War, Wba, Wmz, Wsz, Dxtheme, Iptheme, Logonxp, Obpack, and more.
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ZipWrangler 

ZipWrangler allows you to manage .ZIP, .CAB and .LOK archive files. Compress your own archive files, extract files from downloaded archives; View/launch archive contents; span zips across multiple floppies; more. Free.
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PlexCrypt Compression-Encryption 

PlexCrypt allows set of files or folders to compress and encrypts and decrypts set of files or set of folders based on PKI and Passwords using AES, Blowfish, CAST, DES, ElGamal, IDEA, IES, RC4, RC6, RSA, Serpent, etc.
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Directory Opus 

PC Magazine US 2005 Editors Choice "With its unique conveniences, startling speed, and gleaming interface, Directory Opus 8 is the only file manager we find powerful enough to use as a replacement for Windows Explorer."
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DigiSecret 

An application for strong file encryption, compression, and file sharing (peer to peer). It utilizes time-proven encryption algorithms for creating encrypted archives and self-extracting EXE files, as well as for sharing files over the Internet.
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