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.

Reconnaissance tool for GitHub organizations

Map simple html back into markdown, e.g. if you want to import existing html data in your application.

A client library for the Kafka distributed commit log.

JSON Web Token and its family (JSON Web Signature, JSON Web Encryption and JSON Web Key) in Ruby

Terminal color capabilities detection

A beautiful and powerful interactive command line prompt with a robust API for getting and validating complex inputs.

Ransack is the successor to the MetaSearch gem. It improves and expands upon MetaSearch's functionality, but does not have a 100%-compatible API.

If you need to send some data to your js files and you don't want to do this with long way trough views and parsing - use this force!

Wire protocol for Cucumber

A few useful extensions to core Ruby classes.

Generate equivalent source for parser gem AST nodes

Cucumber tag expressions for ruby

Command line tool for installing EarlGrey into an iOS Unit Testing target

A flexible framework for maintainable Ruby apps

Building Web Service Security

A gem that makes it easy to prevent server side request forgery (SSRF) attacks

Implements the iCalendar specification (RFC-5545) in Ruby. This allows for the generation and parsing of .ics files, which are used by a variety of calendaring applications.

A simple universally unique ID generation library.

This gem simplifies generating the claims needed to authenticate with the Atlassian Connect REST APIs.