MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small.

A plain-Ruby implementation of GraphQL.

memoize methods invocation

This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program

A plain-Ruby implementation of GraphQL.

Inspired by ctemplate, Mustache is a framework-agnostic way to render logic-free views. As ctemplates says, "It emphasizes separating logic from presentation: it is impossible to embed application logic in this template language. Think of Mustache as a replacement for your views. Instead of views consisting of ERB or HAML with random helpers and arbitrary logic, your views are broken into two parts: a Ruby class and an HTML template.

Go faster, off the Rails

Opal is a Ruby to JavaScript compiler. It is source-to-source, making it fast as a runtime. Opal includes a compiler (which can be run in any browser), a corelib and runtime implementation. The corelib/runtime is also very small.

Provides a C-optimized method for determining if a string is blank

Rack middleware to measure production code usage (LOC runtime usage)

A suite of instrumentation metric primitivesthat can be exposed through a web services interface.

Powerful tool to avoid N+1 DB or HTTP queries

This library provides an authorization framework with a declarative DSL With this library, you can write permission policies that are separate from business logic. This library is in production use at GitLab.com

Oga is an XML/HTML parser written in Ruby.

Go faster, off the Rails

ActiveRecord connection adapter for PostGIS. It is based on the stock PostgreSQL adapter, and adds built-in support for the spatial extensions provided by PostGIS. It uses the RGeo library to represent spatial data in Ruby.

It makes histograms out of Ruby data. How cool is that!? Pretty cool if you ask me.

This gem helps to parse, process and compare semantic versions for Maven, NPM, PHP, RubyGems and python packages.

Efficient, immutable, thread-safe collection classes for Ruby

Airbrake Ruby is a plain Ruby notifier for Airbrake (https://airbrake.io), the leading exception reporting service. Airbrake Ruby provides minimalist API that enables the ability to send any Ruby exception to the Airbrake dashboard. The library is extremely lightweight and it perfectly suits plain Ruby applications. For apps that are built with Rails, Sinatra or any other Rack-compliant web framework we offer the airbrake gem (https://github.com/airbrake/airbrake). It has additional features such as reporting of any unhandled exceptions automatically, integrations with Resque, Sidekiq, Delayed Job and many more.