22kActiveWindows · LinuxApache-2.0Replaces partlyRuns on your own server
LiveKit is a server that lets people, devices and AI agents talk by voice, video and data in the same online room. It is for developers who want to build calling, video or voice AI features into their own apps and run them on their own servers.
8.1kActiveMITReplaces partlyRuns on your own server
Fonoster is a self-hostable platform for building voice apps and AI voice agents that make and answer real phone calls, with PBX features and SDKs. It is for developers who want programmable phone calls without relying on a closed service, and it can also be used through Fonoster Cloud.
2.1kActiveApache-2.0Replaces partlyRuns on your own server
OpenVidu is a self-hosted video and audio system that lets you run your own video conferencing app or build custom video features. It is aimed at organisations and developers who want to keep their calls on their own servers.
Runs on your own server · GitHub
None of these match. Try another device.
Before you build
Planning something for an alternative to Twilio? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Read the list of open-source alternatives at https://opensourceeverything.org/data/groups/voice-apis.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do.
My project or idea:
Here is a list of open-source alternatives to Twilio, from Open Source Everything (CC BY-SA 4.0):
- LiveKit (Apache-2.0, https://github.com/livekit/livekit; replaces partly): LiveKit is a server that lets people, devices and AI agents talk by voice, video and data in the same online room. It is for developers who want to build calling, video or voice AI features into their own apps and run them on their own servers.
- Fonoster (MIT, https://github.com/fonoster/fonoster; replaces partly): Fonoster is a self-hostable platform for building voice apps and AI voice agents that make and answer real phone calls, with PBX features and SDKs. It is for developers who want programmable phone calls without relying on a closed service, and it can also be used through Fonoster Cloud.
- OpenVidu (Apache-2.0, https://github.com/OpenVidu/openvidu; replaces partly): OpenVidu is a self-hosted video and audio system that lets you run your own video conferencing app or build custom video features. It is aimed at organisations and developers who want to keep their calls on their own servers.
Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do.
My project or idea:
