UnificationAssertion defines +assert_unifiable+ assertion to test if given two values are unifiable.

unified_diff parses unified diff contents into easy-to-use Ruby objects

UnQLite lib for ruby, using C extension.

Get original URLs from shortened ones

Urban is a command line utility with an API to query definitions from Urban Dictionary.

Utilrb is yet another Ruby toolkit, in the spirit of facets. It includes all the standard class extensions I use in other projects.

Vagrant is a tool for building and distributing virtualized development environments.

Vagrant-ZFS is a plugin for Vagrant to automate cloning and sharing ZFS filesystems from the host machine to a guest VM. This is useful for things like bringing up multiple VMs to test database clustering without requiring you to manually copy large amounts of data into multiple locations on your host or syncing data from host to VMs. This project is still in the very early stages, so proceed with caution.

Adds validation methods to ActiveModel for validating phone numbers.

Log validation errors to the database for later inspection.

Easily track all the validation errors on your database so that you can analyse them.

Sometimes, your objects are only data and no behaviour. These are value objects, and they are defined by their _contents_. These objects are immutable, so it is safe to let them propagate throughout the system. Being immutable, value objects cannot be modified; their contents are set once on initialisation. Also, being identified by their contents, two entities with the same contents are considered equal.

Some tools that make working with the Varnish HTTP cache easier, including things like doing mass purges of entire domains.

Creates a contact sheet, a preview, of a video, usable as library or as a script. Based on VCS *NIX. Creating Thumbnails with libav, ffmpeg or mplayer and compose it with ImageMagick into nice looking sheets.

Vendor everything. Stay sane.

Allows extending ruby's syntax and compilation process

Simply bump your versions

VersionCompare simplifies comparison of version numbers with other version numbers. It aims to be as light and flexible as possible. Inputs can be a String, Integer, Float, Array, or any object that defines `#to_comparable_version`.

Veye is commandline tool like Heroku has own ToolBelt, and purpose of this tool is to make developer's life even more simpler and keep you up-to-date with freshest packages.

Vident test helper for Minitest