Machinery is a systems management toolkit for Linux. It supports configuration discovery, system validation, and service migration. It's based on the idea of a universal system description.

Your swiss army knife for executing external commands in Ruby safely and conveniently.

Make it easy to deal with online programming contests from the command line

Report lint warnings

database association resolver toolkit for postgres, activemodel, sequel, etc.

JSON query language implementation using postgres JSON functions

Rails Rapid Application Development Tools.

A gem providing all useful algorithms and data structures for programming contests

vmit makes easy to maintain and run virtual machines.