libpng is the PNG image format reference implementation. Portable Network Graphics are the most widely used raster image format, patent-free, based on lossless data compression, support indexed/paletted, grayscale, and 24 or 32 bit truecolor images with transparency. It's also an highly extensible container format, with built-in color profiles and representation information, textual meta data, filters, progressive interlacing, and permits animations in the derived APNG or MNG formats.
Utility to help create backups more easily. The idea of the program is that all essential information for creating a backup is in a single file. It can use ‘tar’ for creating archives, has a command line interface, and supports incremental backups.
PeaZip is a cross-platform compression and archiving tool. It utilizes code from 7-Zip, Pea, FreeARC, PAQ, QUAD and UPX. Besides having full 7z, lzma, xzip, gzip, bzip2 and standard ZIP and TAR support, it can also read from APK, ZIPX, ARJ, CAB, CPIO, LZO, RAR, ISO, JAR, XAR, ACE, ARC, and various application or file system containers. AES256 encryption is further supported in some archive types, or splitting and merging, converting between formats, or secure archive content deletion, and creati
Lzip is a lossless data compressor with a user interface similar to the one of gzip or bzip2. Lzip is about as fast as gzip, compresses most files more than bzip2, and is better than both from a data recovery perspective. The lzip file format is designed for data sharing and long-term archiving, taking into account both data integrity and decoder availability.
Inno Setup is a tool to create installers for Microsoft Windows applications. innoextract allows to extract such installers under non-windows systems without running the actual installer using Wine. innoextract currently supports installers created by Inno Setup 1.2.10 to 5.5.6. innoextract is able to unpack (most) GOG.com installers, Wadjet Eye Games installers (to play with AGS), Arx Fatalis patches (for use with Arx Libertatis) as well as various other Inno Setup executables.
Fivebit is a Python 3 compression library for short text strings. It compresses short strings into five bit characters, which yields a 37.5% reduction for lowercase ASCII. Using the included dictionary will decrease size further. Custom dictionaries can be easily created for use with languages other than English Example usage: import fivebit a = fivebit.compress("Your string here") print(fivebit.decompress(a))
Pngcrush is size optimizer for PNG images. It's a command-line tool, works on Unix and DOS environments. It reduces the IDAT picture data stream by testing different PNG filter methods and compression levels. It may also remove meta data chunks, or inject gAMA, tRNS, iCCP or text chunks.
Libvorbis is the reference implementation for the Ogg Vorbis audio file and compression format from Xiph. It provides high fidelity encoding even at low compression ratios, and is widely used by open source and commercial applications.
DACT is a compression tool designed to compress a file dynamically, choosing the algorithm that works best per block of input data to produce an overall smaller output file.
pax (portable archive exchange) is a standard Unix archiving utility as outlined by POSIX.1-2001 / IEEE 1003.2, to bridge and provide a more universal command line interface. The MirCPIO / paxmirabilis implementation was based on paxtar and is developed by the MirBSD project. It provides -r read and -w write support for cpio, ustar, sv4cpio, ar(5), and the old BSD tar format. paxcpio and paxtar are included for easier transition.