sexp_processor branches from ParseTree bringing all the generic sexp processing tools with it. Sexp, SexpProcessor, Environment, etc... all for your language processing pleasure.

The PDF::Reader library implements a PDF parser conforming as much as possible to the PDF specification from Adobe

MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface. Run mailcatcher, set your favourite app to deliver to smtp://127.0.0.1:1025 instead of your default SMTP server, then check out http://127.0.0.1:1080 to see the mail.

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 vie...

ruby-prof is a fast code profiler for Ruby. It is a C extension and therefore is many times faster than the standard Ruby profiler. It supports both flat and graph profiles. For each method, graph profiles show how long the method ran, which methods called it and which methods it called. RubyPro...

Build command-suite CLI apps that are awesome. Bootstrap your app, add commands, options and documentation while maintaining a well-tested idiomatic command-line app

Identify email addresses or domains names that belong to colleges or universities. Help automate the process of approving or rejecting academic discounts.

A iterations per second enhancement to Benchmark.

Ruby bindings for Datadog's API

This gem is used by GitLab to render any non Markdown markup

Have you ever wanted to call <code>exit()</code> with an error condition, but weren't sure what exit status to use? No? Maybe it's just me, then. Anyway, I was reading manpages late one evening before retiring to bed in my palatial estate in rural Oregon, and I stumbled across <co...

A simple Ruby client for the algolia.com REST API

A Ruby CLI gem that beautifies the terminal's ls command, with color and font-awesome icons.

Uses wkhtmltopdf to create PDFs using HTML

This gem implements bcrypt_pbkdf (a variant of PBKDF2 with bcrypt-based PRF)

a simple library to read afm files and use the data conveniently

Ruby/Graphviz provides an interface to layout and generate images of directed graphs in a variety of formats (PostScript, PNG, etc.) using GraphViz.

rdoc generator html with javascript search index.

A gem that provides text handling for Twitter

lolcommits takes a snapshot with your webcam every time you git commit code, and archives a lolcat style image with it. It's selfies for software developers. `git blame` has never been so much fun.