A Ruby library for limiting the number of times a method can be invoked within a specified time period.

A Ruby interface to Gmail API (NO IMAP, NO SMTP). Search, read and send multipart emails; archive, mark as read/unread, delete emails; and manage labels. Everything is done through the Gmail API without going through IMAP or SMTP Protocol

Groonga-client gem supports HTTP or [GQTP (Groonga Query Transfer Protocol)](http://groonga.org/docs/spec/gqtp.html) as the protocol using a client.

Groonga-command is a library that represents [Groonga](http://groonga.org/)'s command. You can write a program that handle Groonga's command by using groonga-command.

Create translations for your ActiveRecord models. Uses delegate pattern. Fully tested and used in a several production sites.

Hatenablog AtomPub API library

A fluentd input plugin that collects node and container metrics from a kubernetes cluster.

Secure, lightweight Rack middleware for Amazon Simple Notification Service (SNS) endpoints. SNS messages are intercepted, parsed, verified, and then passed along to the web application via the 'sns.message' environment key. Heroic::SNS has no dependencies besides Rack (specifically, the aws-sdk gem is not needed). SNS message signatures are verified in order to reject forgeries and replay attacks.

Sinatra project generator.

A persistence library based more closely on the repository model. Used in production for several years.

See http://www.instapaper.com/api/full

Adds the IO.closefrom, IO.fdwalk, IO.pread, IO.pwrite, and IO.writev singleton methods as well as the IO#directio, IO#directio? and IO#ttyname instance methods (for those platforms that support them).

Build tools for JavaScript projects

jr is jq like JSON processor. Its script can be written in Ruby

Kondate is yet another nodes management framework for Itamae/Serverspec.

Ruby FFI bindings to libmagic

MessagePack-RPC, asynchronous RPC library using MessagePack

Ruby library that parses account statements in the SWIFT MT940 format.

Sends FluentD events to New Relic

Numpy wrapper for Ruby