Facil, comodo, gratuito, software libre y para toda la familia.
http://www.7-zip.org/ # Supported formats:
* Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
* Unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z.
# For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
# Strong AES-256 encryption in 7z and ZIP formats
# Self-extracting capability for 7z format
# Integration with Windows Shell
# Powerful File Manager
# Powerful command line version
# Plugin for FAR Manager
# Localizations for 74 languages