It sacrifices speed for the sake of compression quality. To compress files, 7-Zip uses a powerful encryption algorithm developed in-house. 7-Zip can also compress and decompress the following file formats: It is a simple, modular and open container format. This alternative to WinRAR cIt creates Zip files in its proprietary format, 7-Zip, characterized by the. In 2007, this program was named by SourceForge as the best open source project. In the following paragraphs, you will find exhaustive information on these different solutions.ħ-Zip is a free file compression and decompression software, developed in 1999. To facilitate their selection, we We have compiled information on the compatibility of the programs, the compression and decompression options, as well as the cost factor. The following table lists the characteristics of the 13 main alternatives to WinRAR.