In showing a long lists, sometimes one would prefer to see the value arranged aligned in columns. Some examples include listing methods of an object or debugger commands. See Examples in the rdoc documentation for examples.

The complete solution for Ruby command-line executables. Commander bridges the gap between other terminal related libraries you know and love (OptionParser, HighLine), while providing many new features, and an elegant API.

A lightweight library for real-time, consistent and scalable coordination of events.

This library can be used as a module for `fog` or as standalone provider to use vSphere in applications.

A marketing site theme for Jekyll.

Simple and opinionated helper for creating Rubygem projects on GitHub

Lightweight ETL for Ruby

Modern Kafka client library for Ruby based on librdkafka

Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL.

Generate private/public SSH keypairs using pure Ruby

XML parameters parser for Action Pack (removed from core in Rails 4.0)

Fast mime detection by extension or content in pure ruby (Uses freedesktop.org.xml shared-mime-info database)

RSpec tests for your AWS resources.

Axe API utility methods

A deployment tool for Docker. Takes containers from a Docker registry and runs them on a fleet of hosts with the correct environment variables, host mappings, and port mappings. Supports rolling deployments out of the box, and makes it easy to ship applications to Docker servers. We're using it to run our production infrastructure.

Devise extension to allow authentication via LDAP

Dnsruby is a pure Ruby DNS client library which implements a stub resolver. It aims to comply with all DNS RFCs, including DNSSEC NSEC3 support.

EXIF Reader is a module to read EXIF from JPEG and TIFF images.

Fluentd output plugin to add Amazon EC2 metadata fields to a event record

Fluentd output plugin that sends events to Amazon Kinesis.