AnyCable
Realtime server for reliable two-way communication via WebSockets and SSE
2.4k stars 122 forks last commit first released MIT
Actively maintained
Last commit 24 Jul 2026.
AnyCable is an open source realtime server providing reliable, low-latency two-way communication over WebSockets and Server-Sent Events (SSE). It is commonly used as a scalable replacement or companion for realtime features such as chats, notifications, and presence, and integrates well with Rails and other backends.
Key Features
- WebSockets and SSE transport support for realtime messaging
- Delivery reliability features designed to handle brief connectivity interruptions
- Channel/subscription abstractions (compatible with common realtime app patterns)
- JWT-based authentication support
- Prometheus and StatsD instrumentation for monitoring and metrics
- Supports different deployment models, including Docker and Kubernetes-friendly setups
Use Cases
- Realtime chats, notifications, typing indicators, and presence in web applications
- Streaming incremental responses to clients (for example, AI response streaming)
- Realtime dashboards and collaborative UI updates where low latency matters
AnyCable is a strong fit when you need predictable, scalable realtime delivery while keeping control of your infrastructure and integrations with existing backend services.
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