bzip2 vs PowerArchiver

bzip2 is a free data compressor for creating and reading compressed files. It provides command-line tools and supports BZ2 (.bz2), BZ (.bz), TBZ2 (.tbz2), and TBZ (.tbz) formats. The maker says its compression typically comes within 10% to 15% of the best available PPM-family techniques, while running around twice as fast for compression and six times faster for decompression. Its limited media-error recovery may allow undamaged portions of a damaged file to be decompressed. The separate libbzip2 library lets programs read and write .bz2 files or compress data in memory. Command-line flags resemble GNU Gzip's, and the distribution should compile without modification on Unix and Win32 systems. bzip2 dates to 1996 and is open source under a BSD-style license. The official site lists version 1.0.8 as stable and offers source code, not executables. Building has a good chance of success with an ANSI C compiler and at least 8 megabytes of spare memory; the source tarball includes documentation in several formats.

PowerArchiver creates, extracts and manages more than 60 archive formats, including ZIP, 7Z, RAR, TAR, ISO and CAB. It supports archive encryption with AES-256, split archives and archive repair. Its proprietary PA codec provides lossless compression and is described as reducing documents by 30–70%. The Windows edition supports Windows 7 through Windows 11 and Server 2008 R2 through Server 2025; PowerArchiver Pro for Mac is a separate macOS codebase with Finder integration and native drag-and-drop. Edition features vary: Professional includes Outlook, Word and Excel add-ins, while Professional Toolbox adds a cloud browser for S3, Google Drive, OneDrive, Azure and Box, as well as the PACL command-line tool. Business and higher editions include MSI installation, Group Policy support and silent deployment. Enterprise adds FIPS 140-2 validated encryption and lists HIPAA and DFARS support. The free edition is restricted to non-commercial personal, student and nonprofit use. A 30-day trial unlocks the highest Toolbox edition’s features. Prices range from PowerArchiver Free at free to Enterprise Unlimited at $4,995, paid once.