Versionary has a simple VersionNumber object that allows you to do things like `raise "Not the right version" unless VersionNumber.of( RUBY_VERSION ) >= '1.9.2'`

Appends versions to your Gemfile's gem listings

Version checker to integrate with your gem

Gem for testing bundler dependency management

this is a simple gem which compare something versions

Integrating with git-flow for versioning and heroku for deployment, this makes releasing to staging and production a one-line command

Easily loop through versioned API URIs

Version ActiveRecord models using composite primary keys

Dynamic project versioning (alpha/beta/rc) based on commits since last Git tag.

A gem-style version checker

Easy way to get version label, bump the segments (major, minor, patch), and you can include custom version data

Versioning for AR objects

No fuss and extra features. Simply bump major/minor/patch version of your software stored in VERSION file. You can create it too

Pull Github "Release" data into your app - forming a central way to define "versions"

Versioning lib (with Git support)

A generic version parsing library.

VersionOne integration gem.

Check two version against each other to see if you're up to date

Semantic version management for database records using ActiveRecord

Serialize Version from any object that require version