Ports Search

Parity Archive parchive uses Reed-Solomon coding to make multiple parity volumes from the same set of files. What this means is that you can recover as many files as you have recovery volumes. Any recovery volumes for that set will do.

Parity v2 Archive create/verify/recover par2cmdline is a program for creating and using PAR2 files to detect damage in data files and repair them if necessary. It can be used with any kind of file. Par files are especially popular on Usenet.

PBZIP2 is a parallel implementation of the bzip2 block-sorting file compressor that uses pthreads and achieves near-linear speedup on SMP machines. The output of this version is fully compatible with bzip2 v1.0.2 (ie: anything compressed with pbzip2 can be decompressed with bzip2).

Horde package providing an API to various compression techniques.

Horde_Compress_Fast - Fast Compression Library Provides compression suitable for packing strings on-the-fly in PHP code (as opposed to more resource-intensive compression algorithms such as DEFLATE).

Horde replacement for serialize()/json_encode() that will automatically use the most efficient serialization available based on the input.

PeaZip, free archiver utility, Open Source WinRar / WinZip alternative for Windows, Linux and FreeBSD. Compress to 7Z, ARC, BZ2, GZip, PAQ, PEA, self-extracting archives, TAR, WIM, XZ, ZIP files. Open 150+ file types, including ACE, CAB, DMG, ISO, RAR, UDF, ZIPX format. Extract, create and convert archives, split / join files, strong encryption, encrypted password manager, secure delete, find duplicate files, compute hash, export job definition as script to automate backup / restore.

QuaZIP is a simple C++ wrapper over Gilles Vollant's ZIP/UNZIP package that can be used to access ZIP archives. It uses Trolltech's Qt toolkit.

The RPM Package Manager is a powerful command line driven package management system capable of installing, uninstalling, verifying, querying, and updating computer software packages. Each software package consists of an archive of files along with information about the package like its version, a description, and the like. There is also a related API ("Application Program Interface"), permitting advanced developers to bypass 'shelling out' to a command line, and to manage such transactions from within a native coding language.

rzip is a compression program, similar in functionality to gzip or bzip2, but able to take advantage from long distance redundancies in files, which can sometimes allow rzip to produce much better compression ratios than other programs. The principal advantage of rzip is that it has an effective history buffer of 900 Mbyte. This means it can find matching pieces of the input file over huge distances compared to other commonly used compression programs. The gzip program by comparison uses a history buffer of 32 kbyte and bzip2 uses a history buffer of 900 kbyte. The second advantage of rzip over bzip2 is that it is usually faster. This may seem surprising at first given that rzip uses the bzip2 library as a backend (for handling the short-range compression), but it makes sense when you realise that rzip has usually reduced the data a fair bit before handing it to bzip2, so bzip2 has to do less work.