PigeBox is a complete solution to record continuous (24/7/365) audio content. It provides a bootable GNU/Linux system with all required software components to achieve the storage, the recording, and the extraction of audio content. It has been designed to provide a "plug & record" solution for radio broadcasters.
XapianFu is a Ruby library for working with Xapian databases. It builds on the GPL licensed Xapian Ruby bindings, but provides an interface more in-line with "The Ruby Way"(tm) and is considerably easier to use. For example, you can work almost entirely with Hash objects, and XapianFu will handle converting the Hash keys into Xapian term prefixes when indexing and when parsing queries. It also handles storing and retrieving hash entries as Xapian::Document values. XapianFu basically gives you a persistent Hash with full text indexing (and ACID transactions).
RWMA (Ruby window manager addons) is a modular wrapper around dmenu and dzen for adding various keyboard driven actions to (usually minimalistic) window managers, inspired by ruby-wmii. Its main purpose is launching programs and displaying notifications, but it can be expanded with plugins (for example translation, music player control, and volume control).
Ecasound is a software package designed for multitrack audio processing. It can be used for simple tasks like audio playback, recording, and format conversions, as well as for multitrack effect processing, mixing, recording and signal recycling. It supports a wide range of audio inputs, outputs, and effect algorithms. Effects and audio objects can be combined in various ways, and their parameters can be controlled by operator objects like oscillators and MIDI-CCs. A versatile console-mode user interface is included in the package.
GPS Tool is a flexible tool for downloading and processing GPS data on Mac OS X. The tool itself is a front-end for various cross-platform tools, namely GPS Babel and scripts which are used to download GPS data. The tool is very easy to use and allows you to define preset processing scripts for batch processing large amounts of GPS data. The plugin system allows you to integrate device discovery and GPS data download into an easy-to-use GUI.