Freeware: Pkzip

7-Zip 4.327-Zip is a file archiver with the highest compression ratio. The program supports 7z, ZIP, RAR, CAB, ARJ, LZH, CHM, CPIO, RPM, DEB, GZIP, BZIP2, Z and TAR formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.

Crypt4Free 4.6.13Crypt4Free (freeware) is files encryption software with ability to encrypt files and text messages. Support for ZIP files and ability to secure delete sensitive files. Skinnable user friendly interface.

Abakt 0.9.4Abakt is a free, open source, backup tool for Windows. Using a combination of advanced filters you can select files and directories to compress, copy or move.

TaskZip 2.10Backing up files, like checking for computer viruses is something that every personal computer owner should routinely perform, but often neglect until it is too late.

Win-GZ v1.1\is a simple gzip and gunzip compression utility.