PKZip is a classic program designed to make archiving and uncompressing computer files a simple task. The program has a basic interface that allows you to open a wide range of compressed file types. Users can extract single files or entire archives while preserving the internal directory structure. PKZip can be used to compress one or more files as well so that they take up less space when being transferred. Archives made with the program can even include a password to protect the encrypted data stored inside. A useful feature for some people is the command-line scripting ability that makes it easy to process large or complex projects.
WinRAR: An essential tool to compress and decompress all file formats