201 projects tagged "Compression"

Download Website Updated 19 Aug 2013 pngquant

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Pop 85.18
Vit 11.79

pngquant is a batch conversion utility to quantize and dither truecolor PNG images, especially those with a full alpha channel, down to "RGBA-palette" PNGs (i.e., PLTE + tRNS in PNG parlance). Such images are usually two to four times smaller than the full 32-bit versions, and partial transparency is preserved quite nicely. This makes pngquant especially useful both for Web sites and for PlayStation 2 development, where one of the texture formats is RGBA-palette-based (though not PNG-compressed).

Download No website Updated 17 Oct 2003 pysync

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Pop 171.17
Vit 3.19

Pysync has both a demonstration implementation of the rsync and related algorithms in pure Python, and a high speed librsync Python extension. The pure Python is not fast and is not optimized, however it does work and provides a simple implementation of the algorithm for reference and experimentation. It includes a combination of ideas taken from librsync, xdelta, and rsync. The librsync Python extension is less flexible and harder to understand, but is very fast.

Download Website Updated 09 Apr 2010 Python-LZO

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Pop 49.55
Vit 3.38

Python-LZO provides Python bindings for the LZO data compression library. You can access the LZO library from your Python scripts thereby compressing ordinary Python strings. LZO is a portable lossless data compression library written in ANSI C. It offers pretty fast compression and *very* fast decompression. Decompression requires no memory. In addition there are slower compression levels achieving a quite competitive compression ratio while still decompressing at this very high speed.

No download Website Updated 16 Feb 2012 RabbIT

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Pop 201.11
Vit 24.56

RabbIt is a mutating, caching Web proxy used to speed up surfing over slow links like modems. It does this by removing advertising and background images and scaling down images to low quality JPEGs. RabbIT is written in Java and should be able to run on any platform. It does depend upon an image converter if image scaling is on. The recommended image converter is "convert" from the ImageMagick package.

Download Website Updated 02 Aug 2002 RAR

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Pop 141.99
Vit 2.77

RAR is a general purpose archiving and compression program competing with/replacing programs such as PKZip, ARJ and others. RAR offers significantly improved compression ratios, easier use and a better price as well as supporting long file names, disk spanning and self-extracting file creation. RAR introduces an original compression algorithm. It allows higher compression ratios than other PC archiving tools, especially on executable files, Object libraries, large text files, etc.

Download Website Updated 30 Jan 2001 rewrite

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Pop 13.86
Vit 1.00

rewrite reads a file, feeding its content through a shell command or a pipeline, and writes it back to the file. It allows for in place (re)compression, for example. For large multi-part archives, you may not otherwise be able to uncompress and recompress the data again because of lack of temporary disk space. If the output from the pipeline is bigger than the file, the program will continue to allocate memory to buffer the difference, and it will never overwrite data in the file before reading it.

Download Website Updated 30 Mar 2009 shntool

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Pop 162.77
Vit 7.72

shntool is a multi-purpose WAVE data processing and reporting utility that supports various lossless audio formats. These include SHN (shorten), FLAC, AIFF (sox), APE (mac), OFR (OptimFROG), LPAC, WV (WavPack), ALAC, LA, TTA, TAK, MKW, MPEG-4 ALS, Bonk, and KXS (Kexis).

Download Website Updated 21 May 2014 S tar

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Pop 670.68
Vit 299.14

Star is a very fast, POSIX-compliant tar archiver, maintained for more than 30 years. It saves many files together into a single tape or disk archive, and can restore individual files from the archive. It includes command line interfaces for the "tar", "Sun-Tar", "cpio", "pax", and "gnutar" command-line syntax. It includes a FIFO for speed, a pattern matcher, multi-volume support, the ability to archive sparse files and ACLs, the ability to archive extended file flags, automatic archive format detection, automatic byte order recognition, automatic archive compression/decompression, remote archives, and special features that allow star to be used for full and incremental backups. It includes the only known platform independent "rmt" server program.

Download Website Updated 13 Nov 2010 GNU tar

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Pop 464.89
Vit 8.09

GNU `tar' saves many files together into a single tape or disk archive, and can restore individual files from the archive. It includes multivolume support, the ability to archive sparse files, automatic archive compression/decompression, remote archives and special features that allow `tar' to be used for incremental and full backups. It also includes `rmt', the remote tape server (the `mt' tape drive control program is in GNU `cpio').

No download Website Updated 09 Aug 2002 unace

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Pop 108.75
Vit 1.13

unace is a utility to extract, view, and test the contents of an ACE archive.

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Emdros

A corpus query system for analyzed text.

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Luksus

A drive encryption script that makes encryption of storage media and virtual files quick and easy.