acts_as_api enriches the models and controllers of your app in a rails-like way so you can easily determine how your XML/JSON API responses should look like.

Protect attributes from mass assignment

A (partial)implementation of the XMLENC specificiation

Libsaml makes the creation of SAML 2.0 messages easy. The object structure is modeled after the SAML Core 2.0 specification from OASIS. Supported bindings are HTTP-Post, HTTP-Redirect, HTTP-Artifact and SOAP. Features include XML signing, XML verification and a pluggable backend for providers (FileStore backend included).

Build Rails apps in a more maintainable way

CouchRest Model provides aditional features to the standard CouchRest Document class such as properties, view designs, associations, callbacks, typecasting and validations.

Automatically load and include all common Reform features for a standard Rails environment.

Implemention of Payments Initiation (ISO 20022)

Integrate Sequel with Rails (3.x and 4.x)

Sequent is a CQRS and event sourcing framework for Ruby.

Gem for managing multiple analytics services in your rails app.

A ruby gem for validating credit card numbers

Define dependency graphs of Sidekiq jobs

This gem identifies valid tracking numbers and the service they're associated with. It can also tell you a little bit about the package purely from the number—there's quite a bit of info tucked away into those numbers, it turns out.

Accessing REST services in a flexible way

ActionView Record Tag Helpers

Rails extensions for using Roar in the popular web framework.

Wrap your objects with a helper to easily show them

'ActiveLdap' is a ruby library which provides a clean objected oriented interface to the Ruby/LDAP library. It was inspired by ActiveRecord. This is not nearly as clean or as flexible as ActiveRecord, but it is still trivial to define new objects and manipulate them with minimal difficulty.

GitModel persists Ruby objects using Git as a data storage engine. It's an ActiveModel implementation so it works stand-alone or in Rails 3 as a drop-in replacement for ActiveRecord or DataMapper. Because the database is a Git repository it can be synced across multiple machines, manipulated with standard Git client tools, can be branched and merged, and of course keeps the history of all changes.