Open Source Archiving Software

Library and command line tools for XZ and LZMA compressed files

LZ4 is lossless compression algorithm, providing compression speed > 500 MB/s per core (>0.15 Bytes/cycle). It features an extremely fast decoder, with speed in multiple GB/s per core (~1 Byte/cycle). A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio. LZ4 library is provided as open-source software using a BSD license. This benchmark simulates simple "static content transfer" scenario such as OS Kernel compression or video game's static assets (text/images/tables/scripts/etc) which loading from Flash Memory / HDD / SSD. In this case, compression time is completely ignored. Because only content developers compress the data at once and usually they don't care about its computational cost. But they always care end user's experience a.k.a. "loading time" and bandwidth. Please pay attention to "LZ4HC -9" which is quite faster than other methods.

Redhat Package Management files that get built on copr https://copr.fedorainfracloud.org/coprs/casjay/

Zstandard is a fast compression algorithm, providing high compression ratios. It also offers a special mode for small data, called dictionary compression. The reference library offers a very wide range of speed / compression trade-off, and is backed by an extremely fast decoder (see benchmarks below). Zstandard library is provided as open source software using a BSD license. Its format is stable and published as IETF RFC 8478. The negative compression levels, specified with --fast=#, offer faster compression and decompression speed in exchange for some loss in compression ratio compared to level 1, as seen in the table above. Zstd can trade compression speed for stronger compression ratios. It is configurable by small increment. Decompression speed is preserved and remain roughly the same at all settings, a property shared by most LZ compression algorithms, such as zlib or lzma.

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

uCON64 is a tool to backup all kinds of video games. It supports almost every available backup unit for cartridge-based consoles and performs many other tasks like ROM hacking.

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.

JDIFF is a program that outputs the differences between two binary files, either in binary format or in human readable format (detailed or summarized) and then allows to reconstruct the second file from the first one and the diff-file.

PileWorks provides the organizational structure for coordinating several different projects which approach some aspect of Pile Technology. PileWorks defines a set of interfaces and implements some basic infrastructure for Pile engines and agents.

Draco is an open-source library for compressing and decompressing 3D geometric meshes and point clouds. It is intended to improve the storage and transmission of 3D graphics. Learn about compressing and viewing 3D models with Draco, and about different compression models and their effects. Draco was designed and built for compression efficiency and speed. The code supports compressing points, connectivity information, texture coordinates, color information, normals, and any other generic attributes associated with geometry. With Draco, applications using 3D graphics can be significantly smaller without compromising visual fidelity. For users, this means apps can now be downloaded faster, 3D graphics in the browser can load quicker, and VR and AR scenes can now be transmitted with a fraction of the bandwidth and rendered quickly.

This project has moved to GitHub https://github.com/Zipios/Zipios Zipios is a C++ library for reading and writing Zip archive files. Access to the data of individual entries is provided through standard C++ iostreams. A simple read-only virtual file system that mounts regular directories and zip files is also provided.

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.

The aim of the project is to develop an open source iSCSI target with professional features, works well in enterprise environment under real workload, and is scalable and versatile enough to meet the challenge of future storage needs and developements.

It supports files and folders multi-compression (UPX, ZIP, 7Z) and archives extraction (several formats). It includes an intelligent UPX compression mode, self-extracting archive creation, encryption/decryption, external compressors and much more.

Lepton image compression, saving 22% losslessly from images at 15MB/s. Lepton achieves a 22% savings reduction for existing JPEG images, by predicting coefficients in JPEG blocks and feeding those predictions as context into an arithmetic coder. Lepton preserves the original file bit-for-bit perfectly. It compresses JPEG files at a rate of 5 megabytes per second and decodes them back to the original bits at 15 megabytes per second, securely, deterministically, and in under 24 megabytes of memory. We have used Lepton to encode 16 billion images saved to Dropbox, and are rapidly recoding our older images. Lepton has already saved Dropbox multiple petabytes of space. At Dropbox, the security and durability of your data are our highest priorities. As an added security layer, Lepton runs within seccomp to disable all system calls except read and write of already-open file descriptors. Lepton has gone through a rigorous automated testing process.

cd2iso is a small command line tool for creating an ISO-9660 image file of a CD-ROM or DVD-ROM. Perfect for taking backup of your CD and DVD collection.

phpEasyVCS is a simple version control system (VCS) with minimal hosting requirements, namely PHP 5.2+. No database is needed. Files can be viewed and uploaded with a browser or by WebDAV, which allows you to access the files like a local drive in all operating systems. For integration with other software a REST service is provided. It is very easy to view the file versions at a specific point in time. The web interface allows you to easily compare file versions and synchronize and merge local files with the files in phpEasyVCS. It is possible to host multiple repositories and define multiple users with full, read-only or no access to each of the repositories.

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

Tool for managing Nintendo DS ROMs, Includes auto rename, trim and zip utility. Process multiple ROMS with a single click.

Mac binary format converter. Supported binary formats include: native, datafork+resourcefork file, applesingle, macbinary, services for macintosh, etc.

minidjvu is a DjVu encoder for black-and-white images.

Remote Subversion repository dump

At this point this project is mainly wpkg which is a replica of dpkg and apt-get that works under Microsoft Windows and Unices. Since version 0.7.0 it works very nicely as it includes most of the important functionality of dpkg (i.e. most everything except dselect functions.) Otherwise, the Unix GNU Windows is expected to be a large set of packages that wpkg can handle. Packages of all the software available under MinGW and GnuWin32 so you can painlessly build a complete Unix like environment under Microsoft Windows.

This utility converts Motorola S-record files (namely .S19 files) to binary files and vice-versa. It has several useful features that allow full manipulation of record addressing and output file size.

The ZLib.Ada is a thick binding to the popular compression/decompression library ZLib http://www.gzip.org/zlib/. ZLib.Ada provide Ada style access to the ZLib C library.