A fast, asynchronous, rack-compatible web server.

A HTTP client and server library.

A low level implementation of the HTTP/1 protocol.

A low level implementation of the HTTP/2 protocol.

An async websocket library on top of protocol-websocket.

Utopia is a framework for building dynamic content-driven websites.

Mayu Live is a live updating server side VirtualDOM framework for Ruby, inspired by modern frontend tools that exist in the JavaScript ecosystem.

An implementation of the Rack protocol/specification.

A low level implementation of the WebSocket protocol.

Abstraction to help work with A2A protocol

Ruby server implementation of the AG-UI protocol (SSE event streaming, run loop, client-tool round-trips, A2UI) for driving CopilotKit frontends from Rack/Falcon.

Client and server implementation for gRPC using Async.

xDS support for Async::GRPC clients.

A HTTP request and response capture.

An Async server runtime for HTTY sessions that carry HTTP/2 over terminal side channels.

Events and observers for event-driven applications

An asynchronous server that creates events for your event-driven application to use

A tiny, asynchronous static file server with optional Markdown rendering.

Protocol abstractions for gRPC, built on top of protocol-http.

HTTP/3 protocol implementation using ngtcp2 and nghttp3.