Asterisk¬Æ is the world‚Äôs leading open source telephony engine and tool kit. Offering flexibility unheard of in the world of proprietary communications, Asterisk empowers developers and integrators to create advanced communication solutions...for free.
Asterisk¬Æ is released as open source under the GNU General Public License (GPL), and it is available for download free of charge. Asterisk¬Æ is the most popular open source software available, with the Asterisk Community being the top influencer in VoIP.
Asterisk¬Æ was created by Mark Spencer of Digium, Inc in 1999. Code has been contributed from open source coders around the world, and testing and bug-patches from the community have provided invaluable aid to the development of this software.