Ruby Asterisk Gateway Interface (RAGI) is a framework for bridging the Ruby on Rails Web application server environment and Asterisk, the open-source PBX. RAGI eases the development of interactive automated telephony applications such as IVR, call routing, automated call center, and extended IP-PBX functionality by leveraging the productivity of the Ruby on Rails framework. RAGI simplifies the process of creating rich telephony and Web applications with a single common Web application framework, object model, and database backend.
RAT is an RTP audio conferencing and streaming application that allows users to particpate in point-to-point and multi-point audio conferences over the Internet. Developing features include multiple sampling rates, mono/stereo, loss concealment, and IPv4/IPv6 support, and both versions feature encryption and run on a range of platforms.