2. Universal Extractor. If you're looking to just extract files from a zip file (or any other compression format), then Universal Extractor has you covered. It's got an extensive list of supported formats that it can extract from. As its name implies, it only extracts and doesn't create compressed file archives.
4. PeaZip. I like PeaZip the best out of the five listed here. It's open source, supports multi-core CPUs, has a long list of supported formats, and even has a portable version you can easily bring along on a USB key.
5. IZArc. Like TugZip IZArc has a long list of supported file formats and even supports some common disc image formats.
These aren't all, of course, There's a lot more out there. You just have to search and you'll find there's a whole lot more to choose from.