The most popular compression/decompression utility for Windows, WinZip has an easy-to-use and fairly configurable interface. It works fast and adds items to the right-click menu whenever you're dealing with files, in order to easily compress or decompress files
WinRAR is a Windows version of the popular RAR compression format. RAR offers significantly improved compression ratios, easier use and a cheaper price as well as supporting long file names, disk spanning and self-extracting file creation. WinRAR supports the zip compression format for those already having .zip files.
Here is an easy-to-use interface for creating, extracting and viewing archives. It has built-in compression and decompression for many formats and self-extracting archives (»sfx«) for ACE and ZIP formats. Password encryption and recovery records and comment files (HTML, ASCII or ANSI) in ACE and ZIP archives. Complete command line access (compatible with ACE for Dos). There is also a virus scanner that is incorporated.