Realtime GitHub Repositories (2026) · Open Source Tools

The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/

🪽 An open, easy, fast, reliable and battery-efficient solution for real-time communications

TiXL is an open source software to create realtime motion graphics.

Realtime server for reliable two-way communication to power-up any backend

Flutter integration for Supabase. These packages makes it simple for developers to build secure and scalable products.

Open-source LLM gateway in Rust. One endpoint for OpenAI, Anthropic, Gemini and every other vendor. Any SDK, any model, any tool.

Kafka and Durable streams on object storage

Supabase-compatible backend in a single binary — real Postgres with RLS, no Docker. Works with supabase-js unchanged.

Low Cost, Simple and Scalable Way of Data Replication to Apache Iceberg/Cloud/Data Lake

Library using WebAudioAPI to analyse BPM from files, audionodes. It's also able to compute BPM from streams as well as realtime using a microphone. This tool might be useful for music producers and DJs or anybody that wants to get BPM from any music source.

Monitor the incoming and outgoing traffic metrics in realtime for NGINX

A library for real-time voice processing in web browsers

.NET client for Nakama server written in C#.

Visualize live LangGraph execution and see how your agent thinks as it runs.

Native WebSocket RPC and reactive subscriptions for SvelteKit

Library for building distributed, real-time collaborative web applications

Conversational-AI framework for Go.

pastaʃ'ʃ = Spaghetti I/O Event Data Processing, Interpolation, Correlation and beyond :spaghetti:

An open-source team messenger for groups of up to 30, with spaces, threads, files and voice notes. Built with Next.js and PostgreSQL, deployed on Tofu.

Javascript SDK for real-time interactive video generation with Xmax AI