High Quality Content by WIKIPEDIA articles! PowerArchiver is a proprietary file archiver for Microsoft Windows, developed by ConeXware Inc. It supports full read-write access to several different archive formats, including ZIP, 7z and Tar. Additionally, read-only (decompression) support includes RAR, ACE and various disk image formats. The evaluation version of the program remains functional for 40 days. Personal licenses are currently permitted free lifetime updates to all future versions of the software, while the business license is valid through two major versions.