All the basic metrics prepared for Prometheus

Extensible Prometheus exporter for your application

API client for clearbit.com

The Ultimate Gravatar Gem! This gem is used to interface with the entire Gravatar API: it's not just for generating image URLs, but for connecting to and communicating with the XML-RPC API too! Additionally, it can be used to download the Gravatar image data itself, rather than just a URL to that data. This saves you the extra step of having to do so.

Olelo is a git-based wiki which supports many markup languages, tags, embedded TeX and much more. It can be extended through plugins.

Lightweight Static Site Framework

Extends Yabeda metrics with puma web server values by using puma plugin

Adds tracing instrumentation for ruby applications

Command-line AirPlay video client for Apple TV

Collect performance profiles for your Rails application.

A Rack application for serving static sites with ERB templates.

Incoming! standardizes various mail parse apis, making it a snap to receive emails through HTTP post hooks.

Jubilee is a experimental webserver built for speed, it's based on Vertx.

Rack-Jekyll transforms your Jekyll app into a Rack application.

Rack-based console inside your web applications

A plugin-based framework for supporting multiple authentication and authorization systems in Rails/Rack apps. Supports resource-oriented route-by-route access control lists with TLS authentication.

Ruby Adapter for Raygun

ShamRack plumbs Net::HTTP directly into Rack, for quick and easy HTTP testing.

Sitepress command line interface and compilation tools for static site.

Glue to allow mounted rack applications to know where they're mounted