FreeSWITCH is an open-source software-defined telecom stack for building VoIP and real-time communication services with SIP and WebRTC support.
5k stars1.8k forkslast commit Actively maintained
8 self-hosted 8x8 alternatives
Cloud communications SaaS offering business VoIP phone service, contact center (CCaaS), video meetings, team messaging, and analytics for customer and internal communications.
Alternatives to 8x8
#2
Open-source PBX and telephony toolkit for building communications applications; modular C-based engine with SIP, WebRTC, RTP, ARI/AMI APIs and hardware support.
3.4k stars1.3k forkslast commit Actively maintained
An open-source WebRTC SFU that routes media for scalable multiparty video conferencing; supports Colibri XMPP/REST control, DTLS/SRTP, and Prometheus metrics.
3.1k stars1k forksApache-2.0last commit Actively maintained
FusionPBX is a domain-based, multi-tenant PBX and softswitch web UI for FreeSWITCH, supporting extensions, IVR, queues, voicemail, provisioning, and more.
1k stars776 forkslast commit Actively maintained
#5
Open-source, modular SIP server (proxy, presence, conference, B2BUA) with push gateway, ICE/STUN/TURN, MySQL/SQLite support; optimized for mobile and embedded systems.
185 stars83 forksAGPL-3.0last commit Actively maintained
Open-source, API-first platform for carrier-grade IP communications: VoIP, WebRTC, messaging, conferencing and programmable telephony microservices.
Activity unknown
#7
Modular, PHP/JavaScript web GUI that configures and manages Asterisk PBX features, endpoints, and call routing for businesses and service providers.
Activity unknown
#8
OpenTalk is an open-source video conferencing platform offering GDPR-compliant SaaS and self-hosted deployments with features like recording, whiteboards, breakout rooms, polls and telephone dial-in.
Activity unknown
What replacing 8x8 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. 5 of 8 shipped a commit in the last six months. Licences in this list: Apache-2.0, AGPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in VoIP / SIP & PBX.
