The Ruby DevKit is a toolkit that makes it easy to build and use native C/C++ extensions.

money_format is a PHP function that formats a number as a currency string.

Postmark helps deliver and track transactional emails for web applications. In a nutshell, the service replaces SMTP (or Sendmail) with a far more reliable, scalable and care-free environment.

Extracting text and other data from a PDF document, regardless of the libraries used to achieve this.

A type problem in which two or more sequences need to be lined up with each other, generally for the purposes of identifying similarities between them. These problems are common in bioinformatics, but the algorithms used to solve them are just as relevant to aligning other types of sequences, such as text strings. A variety of algorithms have been developed for dealing with various sub-sets of this problem.

Gforth is a fast and portable implementation of the ANS Forth language. It works nicely with the Emacs editor, offers some nice features such as input completion and history and a powerful locals facility

pprof is a golang package used to profile various runtime properties of golang's http server.

DotLiquid is a templating system ported to the .net framework from Ruby’s Liquid Markup.

SitePrism is a simple, clean and semantic DSL for describing your site using the Page Object Model pattern, for use with ruby & Capybara in automated acceptance testing.