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LZ4 is a very fast lossless compression algorithm, providing compression speed at 400 MB/s per core, scalable with multi-cores CPU. It also features an extremely fast decoder, with speed in multiple GB/s per core, typically reaching RAM speed limits on multi-core systems. A high compression derivative, called LZ4_HC, is also provided. It trades CPU time for compression ratio. The libraries are BSD licensed, and the binaries are GPLv2.

TorrentZip creates byte-for-byte exact zip files on any machine. This allows people to join a torrent (after they have converted their zip files) with a particular set of files, thus preventing them from having to download the entire set of files again. Because of the way TorrentZip creates identical zips, the file hashes will always match those in the original torrent. https://sourceforge.net/projects/trrntzip

The unRAR utility is a freeware program, distributed with source code and developed for extracting, testing and viewing the contents of archives created with the RAR archiver, version 1.50 and above. For the usage and distribution license please read the file LICENSE.TXT. The unRAR utility is a minor part of the RAR archiver and contains RAR uncompression algorithm. UnRAR requires very small volume of memory to operate.

Phoon displays the phase of the moon, either currently or at a specified date / time. Unlike other such programs, which just tell you how long since first quarter or something like that, phoon shows you the phase with a cute little picture. You can vary the size of the picture with the -l flag, but only some sizes have pictures defined - other sizes use @'s.

This is sscalc, a sunrise/sunset time calculator, ported to C. You can find the sunrise and sunset times for anywhere in the world as long as you know the latitude and longitude of the location. The program is a port of the JavaScript program located at http://www.srrb.noaa.gov/highlights/sunrise/gen.html The page was written by Aaron Horiuchi, Chris Lehman and Chris Cornwall.

Xplanet was inspired by Xearth, which renders an image of the earth into the X root window. Xplanet uses the Imlib library to read user supplied maps of the earth (or another planet). Orthographic and Mercator projections can be rendered to the root window or saved to a file. An image that the user can rotate interactively can be popped up in a window using OpenGL or Mesa.

cutmp3 is a small and fast command line MP3 editor. It lets you select sections of an MP3 interactively or via a timetable and save them to separate files without quality loss. It uses mpg123 for playback and works with VBR files and even with files bigger than 2GB. Other features are configurable silence seeking and ID3 tag seeking, which are useful for concatenated mp3s.

abcde is a command line (CLI) CD encoder. It will read your CD, contact a CDDB provider, download the track information, rip your CD and store all the encoded tracks in the tree layout you define. It supports multiple encoders for several formats, such as FLAC, Ogg/Vorbis, MP3,... and will use one single rip to create as many output formats as you want Many other useful features are supported.

This library reads song information, such as song title, artist, and album, from an MP3 file. It supports ID3v1, ID3v1.1, Lyrics3v1, Lyrics3v2, ID3v2.2, ID3v2.3, and ID3v2.4 tags. MP3 Frame Headers can also be read. There is a FilenameTag, a ID3v2.4 tag that is intelligently derived from the file name. It contains tag synchronization utilities, multiple save options, and easy tag conversion methods.

libbpm is a C-library which contains low level beam position monitor (BPM) signal processing routines. It's aim is to form a complete set of routines needed to handle RF Cavity BPM data, from digital downmixing, sampling, calibrating analysing and simulating BPM data. This library has been developed in the context of the BPM work done by the accelerator physics groups at University College London, Royal Holloway University of London and the University of Cambridge (UK) (2006-2008)