VSM is a small Ruby framework for building agentic systems using a Viable System Model–style architecture. It gives you Capsules: self‑contained components composed of five named systems (Operations, Coordination, Intelligence, Governance, Identity) plus an async runtime so many capsules can run concurrently.

ActiveMatrix is a comprehensive Rails-native Matrix SDK that enables developers to build sophisticated multi-agent bot systems and real-time communication features. This gem provides deep Rails integration with ActiveRecord models, state machines for bot lifecycle management, multi-tiered memory systems, intelligent event routing, connection pooling, and built-in inter-agent communication. Perfect for building chatbots, automation systems, monitoring agents, and collaborative AI systems within Rails applications. Features include command handling, room management, media support, end-to-end encryption capabilities, and extensive protocol support (CS, AS, IS, SS).

Abstraction to help work with A2A protocol

An Async AWS SDK adapter for `socketry/async` framework

Live debugging for Async.

Client and server implementation for gRPC using Async.

A HTTP request and response capture.

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

Async-native Matrix protocol primitives built on the Socketry async ecosystem. Provides well-known discovery, event notification, and application service models.

async client for polygon.io

A native library implementing the W3C WebDriver client specification.

Provides an async-http based send handler for aws-sdk-core.

Automatically modernize parts of your project/gem.

Rack app exposing the Brute agent over HTTP with JSON and SSE streaming endpoints. Deploy with Falcon.

Litmus-like library focusing on CEM Acceptance Tests

Simple Web Crawler

Crawlr is a modern Ruby web scraping framework built for respectful and efficient data extraction. Features async HTTP requests, robots.txt compliance, cookie management, proxy rotation, flexible CSS/XPath selectors, and comprehensive error handling. Designed for both simple scraping tasks and complex, large-scale data extraction projects.

Supports HTTP/2, HTTP/1.X, HTTP proxying, connection pooling, concurrent requests, and lots more

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.