Vagrant is a tool for building and distributing development environments.

Manage complex tmux sessions easily

Ruby ♥︎ JavaScript

Community-curated topic and collection pages on GitHub

Continuous integration server built on top of Jenkins and Hubot

RSpec tests for your servers configured by CFEngine, Puppet, Chef, Ansible, Itamae or anything else even by hand

A Vim plugin to move function arguments (and other delimited-by-something items) left and right.

Lint tool for Chef cookbooks.

Visualize AWS VPC security groups.

Generate user-friendly, pseudo-random codes without ambiguous letters or numbers (e.g. 0 vs O vs o)

Simple DSL example

A set of Koans to teach the Ruby language