UUID generator/parser in <300 lines. It fully supports UUID versions 1, 3, 4 and 5.

RSpec UUID matcher

This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program

UUID Validator for ActiveModel

Uuid fields for mongoid

UUID "version 6" implementation in Ruby

This is a UUID class intended to help control data locality when inserting into a distributed data system, such as MongoDB or HBase. There is also a Java implementation. This version does not conform to any external standard or spec. Developed at Groupon in Palo Alto by Peter Bakkum and Michael C...

Override migration methods to support UUID columns without having to be explicit about it.

SQLite's UUID v4 extension, packaged as a gem.

Secure, collision-resistant ids optimized for horizontal scaling and performance.Next generation UUIDs. Need unique ids in your app? Forget UUIDs which often collide in large apps.Use Cuid2, instead.

Add UUID type to fast_attributes

C extension for uuid on MacosX

UUID management for models

UUID extension for ActiveRecord

Adds support for PostgreSQL 128 bit UUID column type to ActiveRecord

Sensible UUID library as a gem

A gem to generate an UUID.

A non-portable, fast, simple, atomic UUID generator.

Order for UUID

Allows Rails Admin to work with PostgreSQL UUID field type.