UnRAR is the name of two different command-line applications for extracting RAR file archives.
RARLAB UnRAR This source-available freeware is a command-line version of UnRAR, released by RARLAB, the same company that released the proprietary WinRAR software.UnRAR; RARlab. This software can extract newer RAR v5.0 file archives that has limited support in free extractors.
The source-available license stipulates that users may not use the UnRAR code to create a RAR compressor.
UnRAR-free This is a free software version of UnRAR that uses a library that is based on an old version of RARLAB's UnRAR with permission from author Eugene Roshal. It is probably licensed under the GPLv2-only and unrarlib is available under the GPLv2-or-later or a proprietary license. Work ended in 2007. Unrarlib only supports the RAR2 format.
See also Comparison of file archivers Comparison of archive formats List of archive formats RAR (file format)#Third-party software for extracting RAR files
References
External links RARLAB UnRAR UnRAR-free