#1
Open-source PBX and telephony toolkit for building communications applications; modular C-based engine with SIP, WebRTC, RTP, ARI/AMI APIs and hardware support.
3.5k stars1.3k forkslast commit Actively maintained
3 self-hosted Five9 alternatives
Cloud contact-center (CCaaS) platform for inbound/outbound voice, IVR, omnichannel digital channels, predictive/outbound dialing, workforce management and analytics; integrates with CRMs and provides APIs for routing and reporting.
Alternatives to Five9
#2
Modular, PHP/JavaScript web GUI that configures and manages Asterisk PBX features, endpoints, and call routing for businesses and service providers.
Activity unknown
Open-source, API-first platform for carrier-grade IP communications: VoIP, WebRTC, messaging, conferencing and programmable telephony microservices.
Activity unknown
What replacing Five9 actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 1 of 3 shipped a commit in the last six months. In exchange you take on hosting, backups and updates yourself.
Browse everything in VoIP / SIP & PBX.
