Asterisk - The Open Source Telephony Project  GIT-master-9ed6387
Asterisk Licensing Information

Asterisk License

Note
See the LICENSE file for up to date info

Licensing of 3rd Party Code

This section contains a (not yet complete) list of libraries that are used by various parts of Asterisk, including related licensing information.

ALSA Library

OpenSSL

Curl

PortAudio

Raw list of libraries that used by any part of Asterisk