#realtime

A pure-Go, production-grade implementation of Yjs. Runs real collaborative apps: a horizontally-scaling, Hocuspocus-compatible websocket server with versioned persistence and compaction. Hardened by differential fuzzing and a byte-level conformance suite. Also embeddable on iOS/Android via gomobile.

Rivet Actors are the primitive for stateful workloads. Built for AI agents, collaborative apps, and durable execution.

Rust Agent Development Kit (ADK-Rust): Build AI agents in Rust with modular components for models, tools, memory, realtime voice, and more. ADK-Rust is a flexible framework for developing AI agents with simplicity and power. Model-agnostic, deployment-agnostic, optimized for frontier AI models. Includes support for real-time voice agents.

Java, Android, Clojure and Scala client library SDK for Ably realtime messaging service

WebSocket and WAMP in Python for Twisted and asyncio

The API and real-time application framework

Sanity command line tool (CLI)

Content migration toolkit for Sanity.io

Blazingly fast pusher drop-in replacement written in rust

Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.

:gear: .NET based framework to quickly build three-tier applications.

Ably CLI for Pub/Sub, Chat, Spaces and Control API

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

JavaScript client SDK to communicate with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native. Supports WebSocket, HTTP-streaming over Fetch and Readable Stream API, EventSource, WebTransport.

Crossbar.io - WAMP application router

Type-safe, real-time backend framework on your own Cloudflare account — Workers, Durable Objects, D1, R2, Queues. Convex-style DX, Vite-first.

real time face swap and one-click video deepfake with only a single image

The Standalone Portable Text Editor

Shared data types for building collaborative software

Self-hosted application server for schema-driven APIs, identity, files, automation, integrations, realtime, metering, and protocols.

Convex integration for Nuxt with SSR, real-time subscriptions, and authentication.

📸 A powerful, high-performance React Native Camera library.

Open-source backend-as-a-service for Postgres — REST, typed SDK, auth, storage, realtime and row-level security over your own database, with a schema-driven admin panel when you want one.

Sync-in · Sovereign platform for file storage, sharing, synchronization, and collaboration.

.NET, MAUI, Xamarin, Mono and Unity client library SDK for Ably realtime messaging service

IM Chat, High-performance, scalable, self-hosted instant messaging server in Go — private chat, groups, chatrooms, WebSocket and REST APIs.

Automate code & data workflows with interactive Elixir notebooks

Permit Policy Decision Point service. High-performance, policy-driven authorization for your apps and service.

A nice and casual place for posting random things.

Straightforward realtime kanban boards management for intuitive task tracking. 4ga Boards features an elegant dark mode, collapsible todo lists, and multitasking tools to supercharge your team's productivity.