Displaying 1 to 20 from 35 results

Zstandard - Fast real-time compression algorithm

  •    C

Zstandard is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder. It also offers a special mode for small data, called dictionary compression, and can create dictionaries from any sample set.

lepton - Lepton is a tool and file format for losslessly compressing JPEGs by an average of 22%.

  •    C++

Lepton is a tool and file format for losslessly compressing JPEGs by an average of 22%.This can be used to archive large photo collections, or to serve images live and save 22% bandwidth.

Lz4 - Extremely Fast Compression algorithm

  •    C

LZ4 is a very fast lossless compression based on well-known LZ77 (Lempel-Ziv) algorithm, providing compression speed at 300 MB/s per core, scalable with multi-cores CPU. It also features an extremely fast decoder, with speeds up and beyond 1GB/s per core, typically reaching RAM speed limits on multi-core systems.

7-Zip - File archiver with a high compression ratio

  •    C

7-Zip is a file archiver with the high compression ratio. The program supports 7z, XZ, BZIP2, GZIP, TAR, ZIP, WIM, ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR, Z.

zlib - A Massively Spiffy Yet Delicately Unobtrusive Compression Library

  •    C

zlib is a general purpose data compression library. All the code is thread safe. It is ported to different programming languages like Java, CSharp, Python and Perl.

PeaZip - Cross-platform file and archive manager

  •    Pascal

PeaZip is a free file archiver utility and rar extractor for Windows and Linux, work with 150+ archive types and variants (7z, ace, arc, bz2, cab, gz, iso, paq, pea, rar, tar, wim, zip, zipx...), handle spanned archives and support multiple archive encryption standards. The project aims to provide a cross-platform, portable, GUI frontend for multiple Open Source technologies (7-Zip, FreeArc, PAQ, PEA, UPX) focused on file and archive management, and security

Basic Compression Library

  •    C

Basic Compression Library is a set of open source implementations of RLE (Run Length Encoding), Huffman, Rice, Lempel-Ziv (LZ77) and Shannon-Fano compression algorithms.

QuickLZ - Fastest Compression Library in C, C# and Java

  •    C

QuickLZ is the world's fastest compression library, reaching 308 Mbyte/s per core. It supports Streaming mode for optimal compression ratio of small packets down to 200 - 300 bytes in size.

pigz - A parallel implementation of gzip for modern multi-processor, multi-core machines

  •    C

pigz, which stands for parallel implementation of gzip, it compresses using threads to make use of multiple processors and cores. The input is broken up in to 128 KB chunks with each compressed in parallel. The individual check value for each chunk is also calculated in parallel. The compressed data is written in order to the output, and a combined check value is calculated from the individual check values.

Snappy - Port of Snappy to Java

  •    Java

This is a rewrite (port) of Snappy writen in pure Java. This compression code produces a byte-for-byte exact copy of the output created by the original C++ code, and extremely fast.

lz4-java - LZ4 compression for Java

  •    C

LZ4 compression for Java, based on Yann Collet's work available at http://code.google.com/p/lz4/. This library provides access to two compression methods that both generate a valid LZ4 stream fast scan (LZ4) and high compression (LZ4 HC). The streams produced by those 2 compression algorithms use the same compression format, are very fast to decompress and can be decompressed by the same decompressor instance.

Snappy Java - Snappy compressor/decompressor for Java

  •    Java

snappy-java is a Java port of the snappy, a fast C++ compresser/decompresser developed by Google. It does fast compression/decompression around 200~400MB/sec, Less memory usage. SnappyOutputStream uses only 32KB+ in default, Compression/decompression of Java primitive arrays (float[], double[], int[], short[], long[], etc.) and lot more.

Snappy - A fast compressor/decompressor

  •    C++

Snappy is a compression/decompression library. It does not aim for maximum compression, or compatibility with any other compression library; instead, it aims for very high speeds and reasonable compression. For instance, compared to the fastest mode of zlib, Snappy is an order of magnitude faster for most inputs, but the resulting compressed files are anywhere from 20% to 100% bigger.

Info ZIP - Compressor Archiver Utilities

  •    C

Info-ZIP's purpose is to provide free, portable, high-quality versions of the Zip and UnZip compressor-archiver utilities that are compatible with the DOS-based PKZIP.

SHARC - Fastest lossless compression algorithm

  •    C

SHARC is an extremely fast lossless dictionary-based compression algorithm. It is capable of an unprecedented compression speed of more than 500 MB/s per core on modern Intel CPUs ! It is scalable on multi core/multi CPU, developed in pure C99, and easily portable on many platforms.

LZF Compressor- High-performance, streaming/chunking Java LZF codec, compatible with standard C LZF package

  •    Java

LZF-compress is a Java library for encoding and decoding data in LZF format, written by Tatu Saloranta. LZF alfgorithm itself is optimized for speed, with somewhat more modest compression. Compared to the standard Deflate (algorithm gzip uses) LZF can be 5-6 times as fast to compress, and twice as fast to decompress. Compression rate is lower since no Huffman-encoding is used after lempel-ziv substring elimintation.

XZ for Java

  •    Java

This aims to be a complete implementation of XZ data compression in pure Java. Single-threaded streamed compression and decompression and random access decompression have been fully implemented. Threading is planned but it is unknown when it will be implemented.

BizTalk Message Decompressor


This tool, written in C#, enables you to decompress BizTalk messages/context from a screen that looks like SQL Query Analyzer. By simple entering a SQL query and some custom functions, you can retrieve (partial) message content and/or context. Handy for administrators/engineers!

DiveBuddy Planner


DiveBuddy Planner is a decompression planning application for windows phone 7. The algorithm used is based on Buhlmann ZHL16A, ZHL16B and ZH 17B with m-value.

node-lz4 - LZ4 fast compression algorithm for NodeJS

  •    Javascript

LZ4 is a very fast compression and decompression algorithm. This nodejs module provides a Javascript implementation of the decoder as well as native bindings to the LZ4 functions. Nodejs Streams are also supported for compression and decompression. NB. Version 0.2 does not support the legacy format, only the one as of "LZ4 Streaming Format 1.4". Use version 0.1 if required.