Personnummer handles validation of Swedish personal identity numbers.

Rack middleware for enabling problematic web browsers (Internet Explorer and Safari) to use same cookies in iframes as in parent windows.

Rails-bigint-pk modifies Rails so that it uses 64-bit primary and foreign keys. It works with MySQL and PostgreSQL and has versions for Rails 3 and 4.

Print formatted docs with Winpos WP-800

Sidekiq middleware that encrypts your job data into and out of Redis.

Treat Sidekiq jobs as asynchronous promises.

WatchTower helps you track how much time you spend on all of your projects.

Xamarin Test Cloud lets you automatically test your app on hundreds of mobile devices

Vlad

Makes it possible to query and manipulate ZFS filesystems, snapshots, etc.

A replacement for ActiveResource for RESTful APIs that handles associated object and multiple data sources

Ruby Client for Azure Key Vault

baby braspag gem to use Braspag gateway

Gem includes validations, card brand detection method, etc.

Basquiat is a library that intends to abstract all the complexity of working with message queues

What the summary said.

Buff is an API Wrapper Gem for Bufferapp.com's API

Gem to communicate with CapsuleCRM

clearsale gem to use Clearsale service

Supports defaults, over-rides, and environments