Open source realtime projects
Every project in the registry tagged realtime, ranked by real GitHub adoption.
NVR with realtime local object detection for IP cameras
Realm is a mobile database: a replacement for Core Data & SQLite
The all-in-one, open-source backend platform for agentic coding. InsForge gives your coding agent database, auth, storage, compute, hosting, and AI gateway to s
Broadcast, Presence, and Postgres Changes via WebSockets
Build stateful backends with in-memory actors
Sanity Studio – Rapidly configure content workspaces powered by structured content
PartyKit simplifies developing multiplayer applications
Library for building distributed, real-time collaborative web applications
Fast, Simple and a cost effective tool to replicate data from Postgres to Data Warehouses, Queues and Storage
Full-text search API with real-time indexing and crawling
Self-hosted application server for schema-driven APIs, identity, files, automation, integrations, realtime, metering, and protocols.
Lightweight, self-hosted, open-source chat server with voice, video, text, and screen sharing. Built for small groups who want privacy, simplicity, and full con
A Realtime API Gateway used with NATS to build REST, real time, and RPC APIs, where all your clients are synchronized seamlessly.
Mini social network that I made as my first web app project.
Real-time fraud detection and AML compliance engine
Related tags
Frequently asked questions
How many open source realtime projects are there?
This registry tracks 15 projects tagged realtime, with 109,046 GitHub stars between them. The most-adopted is frigate at 37,160 stars.
Are these realtime projects free to use?
Yes — 14 of the 15 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which realtime project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these realtime projects still maintained?
13 of the 15 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.