AnyCable

AnyCable provides a realtime server that enables two‑way communication over WebSockets and Server‑Sent Events, offering built‑in delivery guarantees, presence tracking, and ordered messaging. It runs as a standalone process and interacts with application back‑ends through a simple HTTP publish/subscribe API, allowing any language—such as Rails, Laravel, Node.js, or Python/FastAPI—to broadcast messages without additional infrastructure.

Designed for high concurrency, the Go implementation can handle more than ten thousand concurrent connections per server while keeping memory usage low. The server can be deployed on‑premise, in a managed SaaS offering, or used as an open‑source component, and it integrates with existing HTTP, NATS, or Redis setups. Security features include HIPAA‑compliant messaging when run on private infrastructure.

The project is released under the MIT license, is actively maintained, and is used by a range of companies across healthtech, fintech, field services, and community platforms. Contributions are welcomed through GitHub, and security issues can be reported to the provided contact address.