Browse free open source VoIP software and projects for Windows below. Use the toggles on the left to filter open source VoIP software by OS, license, language, programming language, and project status.
Issabel PBX - Unified Communications
A simple noise gate app intended for use with VOIPs like Skype.
Unified Communications Server
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
Java wrapper for the popular chat & VOIP service
Java VoIP Softphone (SIP) (replaced by jfPhone)
High performance, production quality STUN server and client library
Respins of various open source PBX projects
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
Java VoIP/SIP PBX system (replaced by jfPBX)
This is a PBX dashboard showing the peer,queue,agent at real time
Accent interfaces and controls systems through goals and policies
ERP, IP PBX, Accounting, CRM, Time tracking, and etc.
A plugin for Teamspeak3. This plugin allows you to autofollow a user.
A client management, billing and e-commerce solution
Information on Asterisk cdr like ASR, ACD, Billing duration 'billsec',