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Title: The best file compressor Post by: spndr7 on September 13, 2010, 10:46:57 AM the BEST compressor
The best compressor available toda --PAQ8P It takes 1 hr for from compressing and decompressing 15 MB data on 3 GHz processor 2.5 GB RAM.....it is program by the person who has won the current Hutter Prize (for info visit http://prize.hutter1.net) prize(annual prize for file compression) . Download the softwares from http://spndr7.fileave.com/paq8px_v69_M4ST3R.rar Practical compressor ->paq8pf It is 40 times faster than paq8p with a bit of compromise on compression ratio . http://spndr7.fileave.com/paq8pf_beta3.7z you can just check its efficiency at http;//maximumcompression.com/ For more info visit encode.ru ->biggest forum for file compression http://encode.ru/forum/showthread.php?t=342 homepage of PAQ cs.fit.edu/~mmahoney/compression/ Title: Re: The best file compressor Post by: theymos on September 13, 2010, 12:36:40 PM FreeArc (http://www.freearc.org/) and NanoZip (http://www.nanozip.net/) also have incredible compression ratios. They're not quite as good as PAQ, but they're much faster.
Title: Re: The best file compressor Post by: LZ on September 13, 2010, 03:20:28 PM I think that 7-Zip (http://7-zip.org/) is the most usable and user friendly compressor.
Title: Re: The best file compressor Post by: BioMike on September 18, 2010, 08:03:43 AM I always liked to use PeaZip, FOSS and support for many formats.
http://peazip.sourceforge.net/ Title: Re: The best file compressor Post by: SmokeTooMuch on September 28, 2010, 10:04:40 PM http://www.maximumcompression.com/index.html (http://www.maximumcompression.com/index.html)
Title: Re: The best file compressor Post by: macje6645 on November 27, 2010, 06:43:07 PM I agree that PAQ8P is the best compressor. It may take a little more time, but the quality is certainly worth it. I would love to hear other suggestions as I am looking to improve my work in this area. I am always open to suggestions.
Title: ZPAQ :THe successor of paq8p Post by: spndr7 on November 29, 2010, 07:36:34 AM http://mattmahoney.net/dc/zpaq.html (http://mattmahoney.net/dc/zpaq.html)--official link
ZPAQ is a proposed standard format for highly compressed data that allows new compression algorithms to be developed without breaking compatibility with older programs. It is not patented. Software is open source (GPL v3) except for the libzpaq API, which is public domain. * libzpaq 2.02 - Contains the ZPAQ library API, ZPAQ specification, reference decoder, the zpaq archiver, zpipe file compressor, and zpsfx self extracting archive stub. To install: create a folder c:\zpaq and unzip all the files there. See enclosed readme.txt for further instructions. Last updated Nov. 13, 2010. The ZPAQ specification and reference decoder define a format for highly compressed data. It is designed so that when better compression algorithms are developed, archives compressed with older verions can still be decompressed with the newer version and vice versa. This is achieved by storing the decompression algorithm in the archive header. Algorithms are based on the PAQ context mixing model with optional postprocessing. libzpaq is an application programming interface in C++ for reading and writing ZPAQ compressed data to or from files or objects in memory. This part of the software is public domain. Download latest version http://mattmahoney.net/dc/libzpaq202.zip Title: FP8 : improved compression then PAQ8PF at almost same speed Post by: spndr7 on November 29, 2010, 07:41:12 AM FP8 (= Fast PAQ8)
http://encode.ru/threads/613-FP8-(-Fast-PAQ8) (http://encode.ru/threads/613-FP8-(-Fast-PAQ8)) --official link FP8 (= Fast PAQ8) is based on paq8px_v69 compressor. It has removed some models so it is faster on default data. It is only little bit slower than paq8pf (at least on my machine) while providing better compression ratio. Special data (wav, bmp, jpeg) are compressed with original model (with same speed and ratio as paq8px) Download link http://spndr7.fileave.com/fp8_v1.zip |