Just. Most. Popular. Archiver. In the world. Everyone knows it, everyone used it. There are often reviews on the net, they say, who needs paid WinRAR when there is free 7-zip? Convenience guys. 7-zip is certainly good, but WinRAR is a classic. He was and, I am sure, will be the #1 archivist for a long time to come. This is a prime example of what good software should be. Naturally, WinRAR supports unpacking of all modern archive formats, but it can only pack to zip and its own rar format. It has a simple and intuitive interface that can be changed with hundreds of different themes. I will not go into technical details – they can be found in the official help.