AnyCable

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.