CPaaS LabFree University

T12 · T12-R36 · Open alternatives

LiveKit, Jitsi, Matrix, and Jami

Four open projects, four jobs. Jitsi is a conferencing stack and a public meet service. LiveKit, already cited, is rooms, agents, and telephony. Matrix is a federated protocol and spec. Jami is a peer-to-peer client that can also speak SIP. None of them is a DID provider unless a page you opened says they sell numbers. LiveKit's telephony page does say LiveKit Phone Numbers can purchase local and toll-free numbers in the United States, in LiveKit Cloud. That sentence is the exception.

ExportSVGFlowSheet

Counts on this page

4boxes
8opened sources
3confirm rows
5study lines

Opened sources

Confirm rows, no URL

Learn it in 5 minutes

  • Jitsi's handbook says Jitsi is a video conferencing platform built from open-source projects, and the article says the project hosts meet.jit.si for free community use.
  • The article names Jitsi Meet, Jitsi Videobridge, and the older Jitsi Desktop, once called SIP Communicator.
  • Matrix's spec says it defines open APIs for decentralised communication over a federation of servers with no single point of control, using JSON, for IM, VoIP signalling, and bridging silos.
  • Jami's site says it is free, end-to-end encrypted, and private, with messaging, calls, conferences, and screen sharing, and that it can function as a SIP client.
  • The Jami site's news list includes an item dated 1 September 2026 titled Jami Web, First Preview. That is a page date, not a standard.

Visual

LiveKit, Jitsi, Matrix, and Jami Open. Teaching sketch. Confirm a live system. Jitsi Matrix Jami Numbers Names come from pages opened in 2026-10. A missing name stays confirm.

Count the boxes: 4. Each label is a name from a page or a study label marked on the drawing.

Flow

LiveKit, Jitsi, Matrix, and Jami Caller SIP Called session setup session setup RTP, not required to hairpin Teaching sketch from RFC 3261 and RFC 3550. Not a packet capture.

What is going on

Four open projects, four jobs. Jitsi is a conferencing stack and a public meet service. LiveKit, already cited, is rooms, agents, and telephony. Matrix is a federated protocol and spec. Jami is a peer-to-peer client that can also speak SIP. None of them is a DID provider unless a page you opened says they sell numbers. LiveKit's telephony page does say LiveKit Phone Numbers can purchase local and toll-free numbers in the United States, in LiveKit Cloud. That sentence is the exception.

Jami's Wikipedia article says usernames are stored on a private Ethereum blockchain administered by Jami, and that a centralised name server exists even though calls are peer-to-peer. The site says no personal information is required to create an account. Those sentences can all be true. Do not collapse them into one privacy claim you did not read.

Worked example

Browser meeting: Jitsi Meet or a LiveKit room. Phone caller into an agent: LiveKit SIP participant, or a CPaaS trunk. Federated chat: Matrix. A SIP softphone that is also a messenger: Jami, and then test the SIP client claim against the build you installed.

Quiz

1. LiveKit's telephony page says LiveKit Phone Numbers covers local and toll-free numbers in the United States.

2. The Jami Web preview date on the site is an ITU recommendation.

Ecosystem

Sister pieces sit on the ecosystem page: the glossary, the mind map, the integration map, and the bridges.

  • Jitsi Videobridge — The selective-forwarding component the Jitsi article names for multi-party video.
  • Matrix — The open federated protocol whose specification introduction was opened. Bridges are named there as a use, not as a list of vendor connectors.

Config. Write which project owns the room, and which project, if any, owns the phone number.

Troubleshooting. A Jitsi room with no dial-in is not a broken SIP trunk. Dial-in was not a sentence on the handbook introduction. Confirm it before you add a carrier.

Bridge. Plivo and Telnyx both name LiveKit from their side. This room is LiveKit's own telephony sentence.

Mind map, sister technologies, and future hooks live on the ecosystem page.

Sources and go deeper

Opened 2026-10. A row marked confirm has no link, because that page was not verified.

sources.json Markdown