The program is written in Lazarus/FreePascal (Windows installable packages are scripted with InnoSetup, with Pascal-like syntax) and offers a LGPLv3 alternative to proprietary software (WinZip, WinRar, etc), running as native application on Windows/Win64, Wine/ReactOS, Linux x86/x86-64 (with Linux ARM and BSD ports also available), and Darwin/macOS both Intel x86_64 and aarch64 (e.g. The project aims to provide a cross-platform, portable, GUI frontend for multiple Open Source technologies (7-Zip, FreeArc, PAQ/ZPAQ, PEA, UPX, Brotli, Zstd) focused on file and archive management, and security (strong encryption, two factor authentication, encrypted password manager, secure delete).

PeaZip is a free file archiver utility and rar extractor for Linux, macOS, and Windows, which works with 200+ archive types and variants (7z, ace, arc, bz2, cab, gz, iso, paq, pea, rar, tar, wim, zip, zipx.), handles spanned archives (001, r01, z01.), supports multiple archive encryption standards, file hashing, exports tasks as console scripts.

Peazip compression