Open Source BSD File Compression Software

Info-ZIP portable compression/archiver utilities (Zip, UnZip, WiZ, etc.)

Library and command line tools for XZ and LZMA compressed files

LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to improve the psycho acoustics, quality and speed of MP3 encoding. Note: we provide source code only!

p7zip is a quick port of 7z.exe and 7za.exe (command line version of 7zip, see www.7-zip.org) for Unix. 7-Zip is a file archiver with highest compression ratio. Since 4.10, p7zip (like 7-zip) supports little-endian and big-endian machines.

PeaZip is a free archiver tool. The application provides an unified, natively portable, cross-platform file manager and archive manager GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX. Create: 7Z, ARC, Brotl, BZip, GZip, PEA, TAR, WIM, XZ, ZPAQ, ZIP, Zstandard files and more Open and extract 200+ file types: ACE, CAB, DEB, ISO, RAR, ZIPX and more Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives (sfx), split files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export task definition as command line script.

OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.

FreeArc combines best 7-zip and RAR features: auto-selected LZMA/PPMD/Multimedia compression, 1gb dictionary, exe/dict/delta data filters, updatable solid archives, SFXes, recovery record, AES+Twofish+Serpent encryption, Linux support and much more...

FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.

KGB Archiver is the compression tool with unbelievable high compression rate. It surpasses even such efficient compression tool like 7zip and UHARC in terms of the abilities. KGB Archiver uses AES-256 encryption to encrypt archives.

Lossless compressor for multichannel 8,16 and 24 bits audio data, with the ability of password data protection. Being 'lossless' means that no data/quality is lost in the compression - when uncompressed, the data will be identical to the original.

Forget pruning! Get forever storage of your files, managing critical backups with bulletproof archival solutions and enterprise-grade reliability Far more efficient than Time Machine or ZFS snapshots-perfect for VM backups and permanent archiving, effortlessly handling TBs and millions of files Optimized for cloud/NAS/USB with ultra-low bandwidth, military-grade encryption, and 1GB/s+ speeds on modern hardware GUI (Win/Linux/Mac) https://sourceforge.net/projects/catpaq Why choose catpaq/zpaqfranz? ✓ Complete: single/multi-file storage architecture ✓ Modern: SHA-2, SHA-3, BLAKE3, XXH3 and more ✓ Paranoid: anti-ransomware data verification with integrity checks ✓ Runs everywhere: TrueNAS, ARM-powered, even ESXi ✓ Lightning-fast: multi-core processing + hardware acceleration ✓ Deduplicated disk imaging ✓ Battle-tested: 15+ years of active development since 2009 https://github.com/fcorbelli/zpaqfranz https://www.francocorbelli.it/zpaqfranz 100% FOSS • forever free

pngcrush and other tools for manipulating PNG (Portable Network Graphics) and MNG (Multiple-image Network Graphics) files.

Native (JNI) cross-platform library to extract (password protected, multi-part) 7z Zip Rar Tar Split Lzma Iso HFS GZip Cpio BZip2 Z Arj Chm Lhz Cab Nsis Deb Rpm Wim Udf archives and create 7z, Zip, Tar, GZip & BZip2 from Java.

Abbrevia is a compression toolkit for Delphi, C++Builder, Kylix, and Free Pascal. It supports compressing and decompressing PKZIP, Microsoft CAB, tar, gzip, and bzip2 archives, and can create self-extracting executables. On Windows it also provides Delphi wrappers for the LZMA, Bzip2, and WavPack SDKs, and PPMd decompression. Abbrevia also has several visual controls that simplify displaying and manipulating archives, including treeview and listview components.

A portable version of the ARJ archiver, available for a growing number of DOS-like and UNIX-like platforms on a variety of architectures.

Zip-Ada is a library for .zip archives. Full sources are in Ada and are unconditionally portable. Input and output can be any stream (file, buffer,...) for archive creation as well as data extraction. Task safe and endian-neutral. More information on: http://unzip-ada.sf.net Alire crate: https://alire.ada.dev/crates/zipada Mirror: https://github.com/zertovitch/zip-ada/

J7Z is an alternative 7-Zip GUI. It was designed by Xavion. 7-Zip is a high-compression file archiver. It was designed by Igor Pavlov. Use J7Z if you want to: * Update existing archives quickly * Backup multiple folders to a storage location * Create or extract protected archives * Lessen effort by using archiving profiles and lists

A patent-free audio codec designed especially for voice (unlike Vorbis which targets general audio) signals and providing good narrowband and wideband quality. This project is complementary to the Ogg Vorbis codec.

Compressor.js is a lightweight JavaScript library for in-browser image compression that allows developers to reduce file sizes before uploading images to a server, improving performance and user experience. It works by taking an input image (such as from a file input) and resizing or reencoding it on the client side according to developer-specified options like maximum width, height, quality, and MIME type. Because compression happens in the browser, users upload smaller images without sacrificing responsiveness or relying on server resources, which is especially useful for mobile users or limited-bandwidth environments. The library supports modern browsers and automatically handles orientation based on EXIF metadata, ensuring images appear correctly after compression.

Dinky is a lightweight developer tool designed to simplify interactions with large language models by providing a streamlined interface for prompt execution and experimentation. It focuses on usability, offering a minimal environment where developers can quickly test prompts, iterate on outputs, and refine workflows without complex setup. The project is built with simplicity in mind, making it easy to integrate into existing development processes or use as a standalone experimentation tool. It supports flexible configuration, allowing users to connect to different model providers and adjust parameters as needed. Dinky also emphasizes speed, enabling rapid iteration cycles that are essential for prompt engineering and prototyping. Its design avoids unnecessary complexity while still providing enough functionality for practical use. Overall, Dinky serves as a compact and efficient tool for exploring and testing AI-driven interactions.

ARC is used to create and maintain file archives. An archive is a group of files collected together into one file in such a way that the individual files may be recovered intact. This repo is obsolete. Use github.com/hyc/arc instead.

Moved to GitHub.com/gdraheim/zziplib/ The ZZIPlib provides read access on ZIP-archives. The library uses only the patent-free compression-algorithms supported by Zlib. It provides functions that transparently access files being either real files or zipped files, both with the same filepath

CADI is an implementation of the JPIP standard (JPEG2000 Interactive Protocol - Part 9). CADI includes a JPIP server, a JPIP proxy, and a JPIP Client. CADI is designed and programmed with the aim to provide a flexible framework to test and develop ne

a Java utility for comparing the contents of any two zip files. It can also be used to compare EAR files, WAR files, or JAR files.

AZip is a free Zip Archive Manager with unique features such as: built-in content Search, smart archive Update, archive Recompression. The goal is to keep the user interface as simple as possible and bother the user the least possible with options or useless gadgets. More details and screenshots on the AZip Web site: http://azip.sf.net Alire crate: https://alire.ada.dev/crates/azip Mirror: https://github.com/zertovitch/azip