Valet helps you write the sophisticated command-line interfaces you're so used to from GNU/Linux. It provides a beautiful API, rich template support, smart configuration, man page generator, and many other useful features. No matter how large or complex your application is, Valet tops it off with...

VAT-ID validator based on ActiveModel::EachValidator

Collaborative git based documentation

A Rails engine to provide help pages for Concerto

VelvetRope is a renderer to complement and enhance Redcarpet's default HTML renderer. It adds support for emoji and syntax-highlighting.

Parse, compare, and increment RubyGem versions with the 'gem-version' CLI command or the 'VersionBoss::Gem::Version' class.

A Ruby wrapper for the Virginia CTE Resource Center's Web API

ViewSpec helps you develop, test and document the view layer of your Rails app using example-led specifications written in an expressive Ruby DSL.

Allows communication with a Vim server through a persistent connection to the X11 server, much like using another instance of Vim.

Rotten Tomatoes API Wrapper in Ruby

Drives the VirtualBox command-line to manage VMs

This gem implements the input messages and message matching engine used in the vissen project.

The output module implements all the objects and facilities used to talk to vissen sinks.

A tool for tending and publishing a digital garden

For more examples have a look into README.md

Generate a (Bible) Verse of the Day using various web service wrappers

A wiki engine for rails

Provided a valid lds.org username and password, Wagon will download all the information from the Photo Directory page and compile it into a convenient PDF.

Wallaby View to extend Rails layout/template/partial inheritance chain.

Use Watir (http://github.com/watir/watir) in Hanami.