Winrar is a powerful compressor, it doesn`t only open the most popular formats but also compresses them. RAR file content can be compressed between 8% and 15% more than ZIP or ARJ.
The principle characteristics of Winrar are a powerful general and multimedia compression, non-RAR file processing (ZIP, ARJ, CAB, TAR, etc), support for long file names, autodecompressing files (SFX), damaged file repair, authenticity verification, intergration of commentaries and file encryption.
WinRAR can view and decompress ISO files. It also supports the ISO 9660 Joliet add-on, and shows long file names within the Joliet CD images.