RSS 86 projects tagged "Compression"

Download Website Updated 16 Mar 2014 pngcrush

Screenshot
Pop 711.14
Vit 93.19

pngcrush is an excellent batch-mode compression utility for PNG images. Depending on the application that created the original PNGs, it can improve the file size anywhere from a few percent to 40% or more (completely losslessly). The utility also allows specified PNG chunks (e.g. text comments) to be inserted or deleted, and it can fix incorrect gamma info written by Photoshop 5.0 as well as the erroneous iCCP chunk written by Photoshop 5.5.

No download Website Updated 28 Sep 2001 OzVM

Screenshot
Pop 17.55
Vit 67.73

OzVM (Virtual Machine Project) is a simple, lightweight, secure virtual machine. The current target application of OzVM is OzStream, which allows platform independent self-decoding of data. The vision of OzStream is to make any and all compressed media self-extracting. OzStream abstracts compressed media from client applications, providing new freedom for users, developers, and compression techniques.

Download Website Updated 02 Apr 2014 Lzlib

Screenshot
Pop 512.93
Vit 54.65

The lzlib compression library provides in-memory LZMA compression and decompression functions, including integrity checking of the decompressed data. The compressed data format used by the library is the lzip format. The lzip file format is designed for long-term data archiving. It is clean, provides very safe 4-factor integrity checking, and is backed by the recovery capabilities of lziprecover.

Download Website Updated 14 Apr 2014 Lunzip

Screenshot
Pop 291.51
Vit 53.46

Lunzip is a decompressor for lzip files. Its small size makes it well suited for embedded devices or software installers that need to decompress files but do not need compression capabilities. Lunzip is able to decompress any lzip file using as little memory as 50 kB.

Download No website Updated 26 Mar 2014 Lbzip2

Screenshot
Pop 369.80
Vit 51.43

Lbzip2 is a parallel, SMP-based, bzip2-compatible compression utility, with a commandline resembling that of the original bzip2. It is usable both on its own and as a filter passed to GNU tar with the "--use-compress-program" option. It uses Gnulib, and its building and testing process is managed by the GNU build system. Starting with release 2.0, lbzip2 is independent of libbz2 and features yambi, an independent BWT compression stack with improved speed and robustness.

No download Website Updated 30 Mar 2014 S3QL

Screenshot
Pop 844.38
Vit 51.42

S3QL is a file system that stores all its data online. It supports Amazon S3, Google Storage, and OpenStack and effectively provides you with a hard disk of dynamic, infinite capacity that can be accessed from any computer with Internet access. S3QL provides a standard, full featured Unix file system that is conceptually indistinguishable from any local file system. Additional features include compression, encryption, data de-duplication, immutable trees, and snapshotting, which make it especially suitable for online backup and archiving. The design favors simplicity and elegance over performance and feature-creep. Care has been taken to make the source code as readable and serviceable as possible. Solid error detection, error handling, and extensive automated test cases are provided.

Download Website Updated 18 Aug 2007 Shoelacer

Screenshot
Pop 17.49
Vit 49.37

Shoelacer attempts to generate a pair of small C functions that compress or decompress a set of data (primarily short strings) presented to it, and possibly other data of that kind. The data it is given may consist of entries of just a few bytes or longer. Its goal is to be reasonably fast with a tiny memory overhead. Compression performance is not so much the goal, although it certainly isn't ignored.

No download Website Updated 17 Jun 2009 XZ utils

Screenshot
Pop 93.84
Vit 42.04

xz is a data compression program using the LZMA algorithm and a similar user interface to gzip. Typically it compresses both tighter and faster than bzip2, and decompresses nearly as fast as gzip. The .xz file format includes headers and checksums, and also includes data filters (LZMA2) that can increase compression further.

No download Website Updated 11 Jun 2010 pxz

Screenshot
Pop 41.71
Vit 37.54

Parallel XZ (pxz) is a compression utility that takes advantage of running XZ compression simultaneously on different parts of an input file on multiple cores and processors. This significantly speeds up compression time.

No download Website Updated 13 Sep 2010 MAF

Screenshot
Pop 20.64
Vit 36.26

MAF is a double-precision floating point number compressor. This package includes a program that can encode binary dump of double-precision floating point numbers into MAF format and decode the MAF-formatted image back to original double-precision numbers.

Screenshot

Project Spotlight

codemiscs

A collection of fun, creative, elegant, exciting, amusing, useful, and profitable commands.

Screenshot

Project Spotlight

Dada Mail

A simple, Web-based mailing list manager.