Super fast evented daemon to process resque jobs, some built in job metrics too, just cause your app might not be on 1.9.1, your bot might be able to

RPC based on EventMachine

Create easily a tunnel to forward connection (like a ssh) to the client host

RightAMQP provides a high availability client for interfacing with the RightScale RabbitMQ broker using the AMQP protocol. The AMQP version on which this gem is based is 0.6.7 but beyond that it contains a number of bug fixes and enhancements including reconnect, message return, heartbeat, and UT...

The Rio Slanger inherits from unmaintained project Slanger and continue to provide update and fixes

Run EventMachine code in a ripl shell - asynchronously of course

Run EventMachine code in a ripl shell asynchronously with readline editing and completion

See Plugin README: http://juggernaut.rubyforge.org/svn/trunk/juggernaut/README

Rity is a lightweight Ruby webserver that runs inside an EventMachine loop and puts each request into a fiber.

This is a fast web socket server built on awesome EventMachine with em-websockets help. It provides easy to use, event-oriented middleware for your web-socket powered applications.

RocketSMS is a EventMachine-based SMPP Gateway

ruby http and https proxy server

Graphing toolkit for RRD

Reactive Extensions provide an enumerable-like interface to process temporal data(events) with the eash usually reserved for structural Enumerables

super simple ruby slack bot framework.

ruby socks5 and http proxy

EventMachine/async based connection driver for RSolr -- compatible with Ruby 1.8

RSpec extension library for Cramp.

a stats daemon that stores data in redis

9P2000/Styx for Ruby