7-Zip: Free, Powerful File Archiver for Windows - Compress, Decompress, Encrypt

7-Zip is a free and open-source file archiver software that is used for compressing and decompressing files. It supports a wide range of file formats and provides high compression ratios. It is available for Windows operating systems and offers a simple and user-friendly interface. 7-Zip also supports encryption and splitting of archives into multiple parts.