Generates has-and-belongs-to-many migrations. Use rails generate habtm model1 model2

Hacker-gems installs most needed gems for hackers.

Ruby on Container / helper tools with DSL for your handmade linux containers.

Parser of Haml template language

Immutable Struct-like record structures based on Hamster.

Toolkit for working with Hashes

Easy path navigation for hashes

Easily track streaks on your ActiveRecord models.

A ruby gem for Uploading image to Hatena Fotolife

A Notification Management Tools

Simple wrapper of Honeybadger

HdrHistogram is an algorithm designed for recording histograms of value measurements with configurable precision. Value precision is expressed as the number of significant digits, providing control over value quantization and resolution whilst maintaining a fixed cost in both space and time.

Take rails constants' loading under control

Makes Her aware of APIs that return pagination headers.

A simplified state machine.

Push from your git repo to a heroku app without any external configuration.

A Ruby FFI wrapper around the System11 hidapi C library

Append-only histories + chained snapshots of your ActiveRecord tables

A command line tool for crytocurrency data. When moon?

Automates as much as possible in assistance with porting of gems to RubyMotion