A RESTful video encoder which you can use as either a front-end to ffmpeg or headless on a server.

Redis backend engine for Faye

Core framework for the FastForward Daemon.

Rack-based WebSocket server

Automatically reloads when changes are detected.

amq-client is a fully-featured, low-level AMQP 0.9.1 client with pluggable networking I/O adapters (EventMachine, cool.io, Eventpanda and so on) and supposed to back more opinionated AMQP clients (such as amqp gem) or be used directly in cases when access to more advanced AMQP 0.9.1 features is more important that convenient APIs

Sprockets test runner and toolkit

Evented framework for ZeroMQ and EventMachine Apps.

em-eventsource is an eventmachine library to consume Server-Sent Events streaming API. You can find the specification here: http://dev.w3.org/html5/eventsource/

Simple http server for eventmachine

Graphite API - A Simple ruby client, aggregator daemon and API tools

A private group chat server for people you trust. Implements a limited subset of the IRC protocol.

Hoof is linux variant of pow. It's based on nss, eventmachine and unicorn

Ruby / Asynchronous PubSubHubbub Client

playful provides the tools you need to build an app that runs in a UPnP environment.

Asynchronous PubSubHubbub client for Ruby

Eventmachine based Campfire bot framework

a Rails 2.3, Rails 3, and Ruby compatible scheduler daemon. Replaces cron/rake pattern of periodically running rake tasks to perform maintenance tasks, only loading the environment ONCE.

The Sensu transport abstraction library

You can easily make Slack Bot!!!