The best open source alternative to Bandizip is 7-Zip. If that doesn't suit you, our users have ranked more than 50 alternatives to Bandizip and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Bandizip are PeaZip, NanaZip, MacPacker and FreeArc.
Feature-rich archiving software with top-tier compression in 7z, integration in Windows Shell, AES-256 encryption, and multi-format support, including TAR, ZIP, RAR. Offers strong file management tools and a command line version for Linux/Unix systems.
PeaZip is free file archiver utility, based on Open Source technologies of 7-Zip, p7zip, FreeArc, PAQ, and PEA projects, for Linux, macOS and Windows.
NanaZip is an open source file archiver intended for the modern Windows experience, forked from the source code of well-known open source file archiver 7-Zip.
Archive manager for macOS. Open source, because essential tools should be free. Preview (nested) archives without extracting them.
FreeArc is a free and open source file archiver developed by Bulat Ziganshin. It uses LZMA, PPMD, TrueAudio and GRzip algorithms with automatic switching by file type, and also uses set of filters—for instance it can remove repetitions from text.
7-Zip with support for Zstandard, Brotli, Lz4, Lz5 and Lizard Compression. Open source under LGPL-2.1 license.
File Roller is the archive manager of the GNOME desktop environment. It can extract, view, create and modify archives. File Roller is only a graphical interface to archiving utilities such as tar and zip.
p7zip is a port of the command line version of the 7-Zip file archiver to POSIX-conforming operating systems like Unix (Linux, Solaris, OpenBSD, FreeBSD, Cygwin, AIX, ...), MacOS X and also for BeOS and Amiga.
Grizzly is an open-source macOS application designed for browsing and extracting ZIP archives with speed and ease. It provides a clean, Finder-style interface with native system integrations to simplify ZIP file management.
KGB Archiver is the compression tool with an unbelievably high compression rate. Unfortunately, in spite of its powerful compression rate, it has high hardware requirements (I recommend processor with 1,5GHz clock and 256MB of RAM as an essential minimum).
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