Link: 7-Zip

A free open source compression utility for Windows. This is a must have on all of my Windows machines. I use this in place of WinZip or WinRAR. Can uncompress all of of the following: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.