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UPX is a free, portable, extendable, high-performance executable packer for several different executable formats. It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks because of in-place decompression. UPX is copyrighted software distributed under the terms of the GNU General Public License, with special exceptions granting the free usage for commercial programs as stated in the UPX License Agreement.

Zoo is used to create and maintain collections of files in compressed form. It uses a Lempel-Ziv compression algorithm that gives space savings in the range of 20% to 80% depending on the type of file data. Zoo can store and selectively extract multiple generations of the same file. Data can be recovered from damaged archives by skipping the damaged portion and locating undamaged data with the help of fiz(1).

The Astro::ADS module is an objected orientated Perl interface to the Astrophysics Data System (ADS) abstract service. The ADS is a NASA-funded project whose main resource is an Abstract Service, which includes four sets of abstracts: 1) astronomy and astrophysics, containing 719,449 abstracts; 2) instrumentation, containing 608,834 abstracts; 3) physics and geophysics, containing 1,079,814 abstracts; and 4) Los Alamos preprint server, containing 4,104 abstracts. Each dataset can be searched by author, object name (astronomy only), title, or abstract text words.

Aqualung is an advanced music player originally targeted at the GNU/Linux operating system. Today it is also running on FreeBSD and OpenBSD, with native ports to Mac OS X and even Microsoft Windows. It plays audio CDs, internet radio streams and podcasts as well as sound files in just about any audio format, and has a feature of inserting no gaps between adjacent tracks.

Enscribe creates digital audio watermark images from photographic images. These images can only be seen using a third party frequency vs time display, such as Baudline (audio/baudline). Images are still visible even after such audio mangling techniques as MP3/Ogg compression, reverb, chorus, etc. Heavy EQ and flange can stripe out vertical sections, but they can also ruin an otherwise good song as well.

fdmf is portable perl/C software for finding pairs of music files in a collection that are likely to contain the same music. It works on the music itself, not on the filename, tags, or headers. It uses an audio fingerprint, or perceptual hash to recognize the duplicate files. It is currently under heavy development, so it might be buggy, broken, or otherwise bad. But it works for me.

Flite is a small fast run-time speech synthesis engine. It is the latest addition to the suite of free software synthesis tools including University of Edinburgh's Festival Speech Synthesis System and Carnegie Mellon University's FestVox project, tools, scripts and documentation for building synthetic voices. However, flite itself does not require either of these systems to compile and run. Flite is the answer to the complaint that Festival is too big, too slow, and not portable enough.

The last.fm fingerprint library The fingerprinting process works in two steps: 1. Get PCM data and pass it to *fplib* which will return byte string to be submitted to the last.fm HTTP fingerprint service. This will return a number (fingerprintID). 2. Query the last.fm API with the fingerprintID and obtain the metadata in xml format. The lastfmfpclient directory contains an example of application that uses fplib and queries both services.

An mp3 frame level editor. Allows you to work with individual frames of an mp3 stream. Supports mpeg audio 1/2/2.5 layer 1,2,3 cbr/vbr. Feature: - Removing bad frames and blips. - Correcting certain errors in the stream. - Working with individual frames, like one would with individual samples in a wave editor - Removing or adding of empty frames (for id3v2) - Setting header flags, gain values - ... LICENSE: GPL2 or later

Open Cubic Player first appeared around December 1994 as a DOS binary-only module player. It supported many sound cards and module formats. At some point, the source code was released to the public under the terms of the GNU General Public License, and around 2003 Stian Skjelstad ported the code to Linux. In addition to legacy tracker formats such as mod, xm and s3m, Open Cubic Player now also supports mp3, ogg and ay files and can be compiled with libadplug support.