Ruby-native LLM agent framework with provider adapters (Anthropic, OpenAI, Google), tool calling, streaming, and session persistence.

Diode helps you to build REST application servers by providing a container for your servlets. About as simple as rack but more powerful, and nowhere near as complex as passenger, Diode has only four classes that make it easy to get up and running quickly, and provides more features as you progress, but only if you want them.

DiscordRDA (Ruby Development API) is a modern, scalable Ruby library for Discord bot development

Discord.rb (not to be confused with discordrb) is a Ruby library that allows you to interact only with the Discord API. The library is still in development, but really simple tasks can be done.

DuoRuby separates CRuby backend and Opal frontend setup while sharing protocol code.

The Raft engine

Experimental High-performance, Redis-based background job processing library for Ruby built on fiber-based concurrency

Fiber scheduler spec

A Ruby stream processing library built around Fiber and Fiber.scheduler.

API security library that is designed for ruby

Get an API started quickly, with performance in mind and, of course, have some fun with Ruby.

Reads a Gemfile and provides description for the gems in it

Automatically generates Claude Code SKILL.md files from a gem's README, RubyDoc, and changelog. Skills are cached in ~/.gem/skills and symlinked into projects driven by Gemfile.lock. Provides both 'gem skill' and 'bundle skill' subcommands.

UNOFFICIAL Ruby port of Google's Agent Development Kit (ADK). This gem is not affiliated with, endorsed by, or maintained by Google. Build, evaluate, and deploy AI agents using the ADK framework in Ruby.

Job Scheduler for Rails and PostgreSQL

A very simple web framework made with async http

A mapping library to stitch geographic map images based on map tiles provided by a rastered tile server.

HTM (Hierarchical Temporal Memory) provides intelligent memory/context management for LLM-based applications. It implements a two-tier memory system with durable long-term storage (PostgreSQL) and token-limited working memory, enabling applications to recall context from past conversations using RAG (Retrieval-Augmented Generation) techniques.

HttpLoader is a powerful, high-concurrency performance and load testing console tool. Built on asynchronous Ruby, it evaluates server limits by opening massive numbers of persistent connections and holding them open. It utilizes event-driven I/O with optional periodic ping requests to keep connections active, allowing you to rigorously benchmark maximum concurrent socket capacity with precision and minimal client-side overhead.

Companion gem for the Hyperion HTTP server. Patches PG::Connection so exec_params and friends cooperate with Async::Scheduler. Fibers serve other requests while one fiber waits on Postgres. Pure Ruby, drop-in.