Use jQuery's autocomplete plugin with Rails 3.

Prometheus metric collector and exporter for Ruby

Flamegraph support for arbitrary ruby apps

Be lazy. Let Maid clean up after you, based on rules you define. Think of it as "Hazel for hackers".

Monitors Ruby apps and reports detailed metrics on performance to Scout.

Modern Kafka client library for Ruby based on librdkafka

A stubbing proxy server for ruby. Connect it to your browser in integration tests to fake interactions with remote HTTP(S) servers.

Facets is the premier collection of extension methods for the Ruby programming language. Facets extensions are unique by virtue of thier atomicity. They are stored in individual files allowing for highly granular control of requirements. In addition, Facets includes a few additional classes and mixins suitable to wide variety of applications.

A simple, Git-powered wiki with a sweet API and local frontend.

Guard::RuboCop automatically checks Ruby code style with RuboCop when files are modified.

OpenID Connect Strategy for OmniAuth.

Client library for the Central Authentication Service (CAS) protocol.

Discourse API

Socialization allows any model to Follow and/or Like any other model. This is accomplished through a double polymorphic relationship on the Follow and Like models. But you don't need to know that since all the complexity is hidden from you.

A Danger plugin for linting Swift with SwiftLint.

CSS toolkit from Twitter For Rails 3.1+ Asset Pipeline. Best one of all!

Squib is a Ruby DSL for prototyping card games

A simple, Git-powered wiki with a sweet API and local frontend.

Ruby library for creating IMS LTI tool providers and consumers

UI for viewing logs in Rack