mika is a multi-platform business mobility application framework based on a client-server concept. mika-server can connect to different backends (currently only PBX/communication systems) using different protocols.
PHP AGI (Asterisk Gateway Interface) facade, with CDR (Call Detail Record), Call spool and schedule auto dial, Send and Receive Fax, Channel Variables, and Caller ID management
PHP Asterisk Manager Interface (AMI) supports synchronous command (action)/ responses and asynchronous events using the pattern observer-listener. Supports commands with responses with multiple events.
WikiPBX is an open source PBX web interface for FreeSWITCH. WikiPBX is written in python and uses the Django web application framework.