Showing 33 open source projects for "compression algorithm"

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  • 1
    LZ4

    LZ4

    Extremely fast compression algorithm

    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...
    Downloads: 391 This Week
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  • 2
    Zstandard

    Zstandard

    Zstandard - Fast real-time compression algorithm

    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...
    Downloads: 52 This Week
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  • 3
    Brotli

    Brotli

    Brotli compression format

    Version 1.0.9 contains a fix to "integer overflow" problem. This happens when "one-shot" decoding API is used (or input chunk for streaming API is not limited), input size (chunk size) is larger than 2GiB, and input contains uncompressed blocks. After the overflow happens, memcpy is invoked with a gigantic num value, that will likely cause the crash. Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm...
    Downloads: 23 This Week
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  • 4
    Penguins' eggs

    Penguins' eggs

    On the road of Remastersys, Refracta, Systemback and father Knoppix!

    penguins-eggs is a console tool, under continuous development, that allows you to remaster your system and redistribute it as live images on usb sticks or via PXE, work on amd64, i386 and ARM64.
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    Downloads: 108 This Week
    Last Update:
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  • 5
    FractalImageCompression

    FractalImageCompression

    Java Fractal Image Compression based on Delaunay triangulation

    Implementation of the algorithm of the paper: "Fractal image compression based on Delaunay triangulation and vector quantization" It is a Fractal compression algorithm, based on relationships between regions of the image (in this case triangles), rather than in explicitly the pixel values themselves. Video demo: https://frojasg1.com:8443/resource_counter/resourceCounter?operation=countAndForward&url=https%3A%2F%2Ffrojasg1.com%2Fdemos%2Faplicaciones%2FfractalCompressor...
    Downloads: 5 This Week
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  • 6
    Crunch

    Crunch

    Insane(ly slow but wicked good) PNG image optimization

    Crunch is an image compression tool for lossy PNG image file optimization. Using a combination of selective bit depth, color palette reduction and color type, as well as zopfli DEFLATE compression algorithm encoding that employs the pngquant and zopflipng PNG optimization tools, Crunch is effectively able to optimize and compress images with minimal decrease in image quality. While it may produce file size gains larger than those produced by lossless approaches, the impact on image quality...
    Downloads: 16 This Week
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  • 7
    clzw

    clzw

    Implementation of LZW compression algorithm in C

    Simple, fast implementation of LZW (Lempel–Ziv–Welch) data compression algorithm in C. - Console encoder/decoder tools - OS independent - Could be used in embedded projects - Works with raw code-stream LZW features: - Hardcoded dictionary size - Variable code size - Code search is performed by hash table and embedded in dictionary linked lists (encoder) - No dynamic memory allocation
    Downloads: 0 This Week
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  • 8
    lzhw

    lzhw

    LZHW Windows command line lossless compression tool for tabular files

    LZHW Command Line Lossless Compression Tool is a Windows command line tool used to compress and decompress files from and to any form, csv, excel etc without any dependencies or installations. Using an optimized algorithm (LZHW) developed from Lempel-Ziv, Huffman and LZ-Welch algorithms. The tool can work in parallel and most of its code is written in Cython, so it is pretty fast. It is based on python lzhw library. Full tool documentation can be found at: https...
    Downloads: 0 This Week
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  • 9
    Ank Zipper

    Ank Zipper

    A free and easy-to-use password protected file archiver

    Ank Zipper provides you with a lightweight, Java-based application designed to provide security to your documents. Ank Zipper can compress both files and folders and create password-protected archives, in order to prevent unauthorized access to important files. Additionally, it can be used for extracting or simply browsing ZIP files.It includes AES(Advanced Encryption Standard) algorithm to encrypt/decrypt file(s). Ank Zipper is a cross-platform software that can be used on any platform...
    Downloads: 1 This Week
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  • 10
    bzip2

    bzip2

    A file compressor/decompressor utility

    bzip2 is a free and open-source file compression program that uses the Burrows–Wheeler algorithm. It only compresses single files and is not a file archiver. It is developed and maintained by Julian Seward. Seward made the first public release of bzip2, version 0.15, in July 1996. The compressor's stability and popularity grew over the next several years, and Seward released version 1.0 in late 2000. Official website: https://www.sourceware.org/bzip2/ Source: https://sourceware.org/pub...
    Downloads: 0 This Week
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  • 11
    an implementation of the Inflate decompression algorithm corresponding to deflate compression as used by gzip and compatible with RFC 1951 Written in Z80 assembly language, with memory paging support for the Sam Coupe
    Downloads: 0 This Week
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  • 12
    MicroZip

    MicroZip

    Create,extract and encrypt ZIP,GZIP,TAR,BZIP2,TAZ files on Java mobile

    MicroZip is a powerful file compression and encryption utility for mobile phones which allows you to create and extract compressed archives in multiple formats and encrypt sensitive information with powerful AES-256 encryption. MicroZip can create and extract ZIP,TAR,TGZ,TBZ2 archives and extract many other formats as JAR,GZ,BZ2,TBZ,WAR,BZIP2,GZIP,Z,TAZ,CBZ etc. MicroZip allows you to extract selected files without extracting the whole ZIP archive. MicroZip also supports encrypted ZIP...
    Downloads: 6 This Week
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  • 13
    SD Download Manager

    SD Download Manager

    Download anything from the Internet, with 32 connections and quickly

    A fast download manager with 32 connection for download anything from internet SD Download Manager is a advanced and powerful tool to increase download speed up-to 500%, resume broken/dead downloads. SD Download Manager uses sophisticated dynamic segmentation algorithm,data compression and connection reuse to speed up the download process. SD Download Manager supports HTTP, HTTPS and FTP protocols, firewalls, proxy servers, automatic proxy scripts, file redirects, cookies...
    Downloads: 8 This Week
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  • 14
    backdup

    backdup

    BackDup is a Duplicity front-end for MacOS and Linux

    BackDup is a Duplicity (http://duplicity.nongnu.org/) front-end for MacOS and Linux written in Java. Duplicity creates bandwidth-efficient backup using the rsync algorithm. Mac OS users: please install Duplicity via macports (https://www.macports.org/) Linux users: install Duplicity via your package manager as usual.
    Downloads: 1 This Week
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  • 15

    Text Zip

    This software zips and unzips a text file

    This software zips and unzips a .txt file, using the Huffman encoding algorithm and the list and tree data structures. The result files are named zippedFile.txt and unzippedFile.txt and can be found at the same directory as the Text Zip executable file.
    Downloads: 1 This Week
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  • 16

    LZWStream

    The LZW algorithm in C#

    Implementation of the LZW algorithm in C#, adhering to the built-in System.IO.Compression. The algorithm and code is much improved, compared to projects like SharpLZW. The LZW algorithm is for arbitrary lossless data compression and are noticeable for simplicity and low (compared to others) memory consumption. Making it interesting for eg. embedded use. There're many other LZW implementations out there. This one is focused on KISS and C#.
    Downloads: 0 This Week
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  • 17
    sfxcompress
    The utility sfxcompress is a bash script used to pack and encrypt the current directory on a self-extracting file. It also includes the calculation of the MD5 function to check if the compressed file is correct.
    Downloads: 0 This Week
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  • 18
    Peters Backup is a program for backing up your important data files on to diskette, zip drive, fixed disk or CD/RW. It uses an extremely efficient compression algorithm. It keeps track of all versions of your files in full and incremental backups.
    Downloads: 0 This Week
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  • 19
    The RLE compression pack is a set of utilities to compress and decompress files using RLE algorithm.
    Downloads: 1 This Week
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  • 20
    Implementation of LZW compression/decompression algorithm in Java.
    Downloads: 0 This Week
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  • 21
    PZip is a C++ library and application with similar syntax and usage to bzip2 and gzip. The underlying compression algorithm is PPMD and compression performance is significantly better than either gzip or bzip, with similar speed.
    Downloads: 0 This Week
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  • 22
    An algorithm for compression and decompression of Binary Decision Diagrams will in many cases reduce the size of the BDD to 1-2 bits per node.
    Downloads: 0 This Week
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  • 23
    Calculates differences of executable files using a randomized algorithm for matching with mismatches.
    Downloads: 0 This Week
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  • 24
    PowerPAQ will be GUI application that will use strenght of GPL-licensed PAQ compression algorithm. This algorithm is slow but extremely powerful. First, windows version will be out. Next step is Linux GUI version. ==Project is coming back to developement with new ideas!===
    Downloads: 0 This Week
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  • 25
    czip is a unix based utility written for the cell broadband engine. It allows its users to compress files in gzip format. It uses Jean-loup Gailly's deflate algorithm and is based in part on pigz, Mark Adlers parallel version of zlib.
    Downloads: 0 This Week
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