Youyouaidi offers a UUID class for parsing, validating and encoding UUIDs

Ruby wrapper for the uuid library in your OS.

Add UUID type to fast_attributes

This tool adds the missing UUIDs into the installed Xcode plug-ins so that they can be loaded by newer versions of Xcode.

UUID Validator for ActiveModel

Allows ActiveRecord to use (native) UUIDs, even as primary keys. Currently only works with PostgreSQL.

Quickly and easily convert UUIDs to space efficient Base62 strings.

active_record_uuid is a nice gem that add uuid supports to your activerecord models (MySQL). It allows you to store uuid in various formats: binary (16 bytes), base64 (24 bytes), hexdigest (32 bytes), or string (36 bytes), and query back with uuid string.

Compression and packing methods for singular and collection IDs and UUIDs.

The Rails UUID-aware Logger (RUL) is a plugin that adds a UUID from the current thread to all messages getting logged. With a UUID-aware log statement, you can more easily track your user's activity through your application.

FriendlyUUID is a Rails gem that shortens your UUID records' URLs. What once was 758d633c-61d4-4dfc-ba52-b7b498971097 becomes 758d. FriendlyUUID does not introduce any new state to your models, even under the hood. FriendlyUUID URLs are exactly as unique as they need to be. The...

Initializer to auto set ID, when PK is a uuid.

Adds a :uuid column to ActiveRecord MySQL2 Adapter. Store UUIDs as 16 bytes binary column.

Converts BSON::ObjectId to and from UUIDv1's.

Generate uuids for models

Sensible UUID library as a gem

This library generates and parses Universally Unique Identifier (UUID), based on OSSP uuid C library. So, libossp-uuid library is pre-required. OSSP uuid (http://www.ossp.org/pkg/lib/uuid/) is a ISO-C:1999 application programming interface (API) for the generation of DCE 1.1, ISO/...

Unobtrusive binary UUID support for ActiveRecord. Supports migrations, reflections, assocations and SchemaDumper.

The same as Ryan Bates uniquify gem, but uses UUID as default to generate tokens

Create, update, and delete records within a block, assign the same request_uuid to them, and be able to easily view and undo them