Best Open Source PBX Software 2026

PBX Software

PBX Chat Clear Filters

Browse free open source PBX software and projects below. Use the toggles on the left to filter open source PBX software by OS, license, language, programming language, and project status.

Build Agents and Models on One Platform
Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.

Start Free
Train ML Models With SQL You Already Know
BigQuery automates data prep, analysis, and predictions with built-in AI assistance.

Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.

Start Free
1

Asterisk GUI client, VICIdial

VICIdial Contact Center Suite

This software suite is designed to extend the functionality of the Asterisk PBX through platform-independant web-client applications. Includes the VICIdial inbound/outbound contact center application. The suite is scalable across multiple Asterisk servers.

13 Reviews

Downloads: 45 This Week

Last Update: 2026-06-15
See Project
2

JabAst

Jabast connects XMPP Clients to a asterisk PBX to allow extension listening, calls and presence controle for Agents.

Downloads: 0 This Week

Last Update: 2013-04-08
See Project
3

Spark-Centric plugin

Spark plugin for integratión with CentricCRM. This plugin for Spark XMPP client complements the integration between Asterisk PBX, Centric CRM and XMPP Server. Automatically open session on Centric CRM and redirect to contact the page

Downloads: 0 This Week

Last Update: 2016-05-24
See Project