26elf

The Idea
Fische is a standalone sound visualisation program for Linux based on SDL and alsa libraries. Since v3.1.0 fische also supports PulseAudio.
It is released as free software under the terms of the GNU General Public License.
update: Fische has recently been extended to support OS-X and Windows Operating Systems.

Standalone?
Yes. Fische is not a plugin. It will accept any sounds from anywhere. Music players, TV, a microphone - you name it.

Status
Fische has recently been rewritten from scratch for the second time. It is expected to be stable, portable, and fully functional.

Get Fische
Please see the Downloads section for the latest release tarballs.

Help Wanted
Audio programmers: If you would like to write jack/EsounD/OSS/... code for fische, I would be delighted! Please contact fische at 26elf dot at.

The Idea
OpenApproach aims to be a flexible ATC simulation game for all platforms supported by the Qt Toolkit (i.e. at least Windows, Linux, OS X).
The target is to create a simulation, that is on one hand realistic enough, and on the other hand enjoyable by a wide audience. Thorough aviation knowledge will not be required.

Status
The current status of this project must be classified as "pre alpha". Many basic features are yet missing. For example, at the time of writing, all aircraft stay at their initially assigned altitude/flightlevel and maintain their initial airspeed. Still, for testing purposes, I recommend you have a look at it. You can try maintaining separation by just giving lateral instructions - don't worry, collisions will not yet be detected.

Help Needed
Are you a pilot? A controller? Do you have access to navigation data? Typing coordinates and routing information is a lot of work. I am planning to release a fully featured Vienna International Airport with the first stable release. If you would like to participate and add other airports like for example London Heathrow, Paris Charles de Gaulle, Roma Fiumicino,..... then please contact me for instructions, or take a look at LOWW.xml in the tarball.