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Asterisk is a free and open source framework for building communications applications and is sponsored by Sangoma.
11500000
Downloads Annually
Downloads Annually
85000
Community Members
Community Members
150
Countries with Installations
Countries with Installations
11500000
Servers Worldwide
Servers Worldwide
85000
New Endpoints Each Year
New Endpoints Each Year
AstriCon
Call for Speakers is now open for 2027!
AstriCon is the longest-running open source communications convention, bringing together the Asterisk and FreePBX communities for technical sessions, real-world insights, demos, and conversations about what’s next.
In 2027, AstriCon returns to Pasadena, California, April 1–2, alongside SCALE, with multiple tracks, educational sessions, and plenty of opportunities to connect with developers, integrators, technology leaders, and other members of the open source community.
Have something to share? Submit your talk for AstriCon 2027.
Asterisk News
Asterisk 23.5.0 Now Available
August 27, 2026
Asterisk 22.11.0 Now Available
August 27, 2026
Asterisk 20.21.0 Now Available
August 27, 2026
Certified Asterisk 22.8-cert4 Now Available
August 7, 2026
Asterisk Security Release 23.4.1
June 25, 2026
Security Advisories
ast_loggrabber executes python script in world writable directory(`/tmp`) leading to potential privilege escalation And RCE: (GHSA-xgj6-2gc5-5x9c)
June 25, 2026
LDAP Filter Injection in res_config_ldap via SIP Username (Unauthenticated Information Disclosure): (GHSA-r6c2-hwc2-j4mp)
June 25, 2026
SQL Injection in cel_pgsql and cel_tds via CELGenUserEvent eventtype Field: (GHSA-ph27-3m5q-mj5m)
June 25, 2026