Opera's data compression app for Android is now available to anyone in the U.S. that wants to try it, but you may have to wait to start using it.
WinZip 18 comes with optional add-ons that may mean most users never see the main application window.
You can't go wrong with paid compression programs WinZip or WinRAR...but if you'd rather hang on to your $30, check out these free alternatives. Each of them can get basic file zipping and unzipping done without making you unzip your wallet.
ZipItFree's file compression is very efficient, and its unobtrusive interface is good to work with. This free utility is well worth a spot on your PC.
Hamster Free Zip Archiver compresses files quickly, and it has a cheerful, easy-to-use interface. For tech support, though...you might as well ask your hamster.
Supports all compression formats, totally free, multilanguages, easy interface
Universal Extractor is a dab hand at opening arcane archives, but it can't actually do its own compression. Support is nonexistent, leaving you on your own.
Peazip is a compress/decompress utility that handles all the major formats and a ton of more obscure ones. It won't create proprietary format archives like RAR, but it will read and extract files from them.
WinZip for Windows 8 finds itself in the uncomfortable position of being shoehorned the Modern interface, and the result isn't pretty.
WinZip 17 lets you archive, encrypt, convert, and share your files across multiple services. New integration with cloud storage services and social networks keep this venerable compression utility relevant.