The Schroedinger project implements portable libraries for the high
quality Dirac video codec created by BBC Research and Development.
Dirac is a free and open source codec producing very high image quality
video. The project produces two libraries in ANSI C89, one for decoding
and one for encoding.

ScummVM is an implementation of the LucasArts SCUMM (Script Creation
Utility for Maniac Mansion) interpreter, used in games such as Monkey
Island and Day of the Tentacle. Some things are still missing in a few
games, and there are a few bugs. Regardless, it is possible to play
some games all the way through to the end.

At the moment there is support for the following games:

Zak McCracken and the Alien Mindbenders (FM Towns version) Loom
(256-color CD version) The Secret of Monkey Island (VGA CD version)
Monkey Island 2: LeChuck's Revenge Indiana Jones and the Fate of
Atlantis (demo and full version) Day of the Tentacle (demo and full
version) Sam & Max (demo and full version) Simon the Sorcerer

There is also experimental support for these games:

Indiana Jones and the Last Crusade (VGA version) The Secret of Monkey
Island (VGA floppy disk version) Full Throttle The DIG

If you are a fan of Sierra On-Line adventure games you might want to
try the 'sarien' and 'freesci' packages.

A lightweight C library for RDF syntax which supports reading and writing Turtle and NTriples.

A lightweight C library for storing RDF data in memory.

A library for serialising LV2 atoms to/from RDF, particularly the Turtle syntax.

The Synthesis ToolKit in C++ (STK) is a set of open source audio
signal processing and algorithmic synthesis classes written in the C++
programming language. STK was designed to facilitate rapid development
of music synthesis and audio processing software, with an emphasis on
cross-platform functionality, realtime control, ease of use, and
educational example code. The Synthesis ToolKit is extremely portable
(it's mostly platform-independent C and C++ code), and it's completely
user-extensible (all source included, no unusual libraries, and no
hidden drivers). We like to think that this increases the chances that
our programs will still work in another 5-10 years. In fact, the
ToolKit has been working continuously for about 10 years now. STK
currently runs with realtime support (audio and MIDI) on Linux,
Macintosh OS X, and Windows computer platforms. Generic, non-realtime
support has been tested under NeXTStep, Sun, and other platforms and
should work with any standard C++ compiler.