Mark, one of our subscribers, sent this one in. Thanks, Mark!
FileZip is another free equivalent to WinZIP, for those using WinZIP and getting tired of the shareware nagging. FileZIP supports every file format you’ll probably ever use. IT works with archives quite nicely. It has a built-in email client (for some strange reason), support for uncompressing multiple files at a time, shell integration, and creating self-extracting archives.
As mentioned, it is free. The program’s author has a donate button on his website and those who really like the program should send a few bucks his way, but the program is offered with no strings attached. Enjoy!