Appkonference is a high performance voice/video conferencing system for Asterisk. It is a fork of appconference, and it focuses on reliability and scalability. Appkonference has been tested on both Asterisk 1.4 and 1.6.X. Both Asterisk installations supported more than 1200 participants at a time.
Beer Watch allows you to place a temperature probe in your beer wort and perform an action if your wort temperature falls below a certain value, like click a relay on to turn heat on. It was developed using the GPIO from the Raspberry Pi. The install file includes pictures and descriptions to complete the wiring (AC and DC).
Bind IP Changer is for people who run servers behind a dynamic IP address, but have a statically assigned DNS record. It checks to see if the host's IP address has changed, and it emails a notification of the new (and old) IP address to a user-defined email address. It also updates a specified DNS record when the IP address changes.