Elastix is one of the top open source projects in Latin-American with worldwide recognition. The goals of Elastix are reliability, modularity and ease-of-use. These characteristics added to the strong reporting capabilities make it the best choice for implementing an Asterisk-based PBX.

Asterisk, the world's most popular open source communications project, is free, open source software that converts an ordinary computer into a feature-rich voice communications server. Asterisk makes it simple to create and deploy a wide range of telephony applications and services, including IP PBXs, VoIP gateways, call center ACDs and IVR systems.

Trixbox, is an IP-PBX software solution designed for small and medium-sized businesses. trixbox comes in two flavors: the open-source community edition and a hybrid-hosted, commercially-proven solution.