LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to improve the psycho acoustics, quality and speed of MP3 encoding. Note: we provide source code only!
Tapioca is a framework for Voice over IP (VoIP) and IM applications. Its main goal is to provide an easy way for developing and using VoIP/IM services in any kind of application. It provides a pluggable interface for different protocols, such as SIP/XMPP