At its core, Asterisk is a telephony application server that turns an ordinary computer into a communication server. It processes calls through a flexible dialplan (extensions.conf or AEL) and executes applications. Whereas FreeSWITCH is an event-enabled software switch with a more modular, XML-based configuration. Asterisk development is more like programming, while FreeSwitch is mor... https://www.capanicus.com/blog/freeswitch-vs-asterisk/