I'll think of a better description later, but if you're reading this, then I haven't

event_bus provides support for application-wide events, without coupling the publishing and subscribing objects or classes to each other

Save unnecessary round trips to the database

Ansible provides a conveniance method to your Rails controllers for creating SSEs.

Ansible allows you to stream events to a partial using ActionController::Live

Provides a ruby implementation of the Client Side Encryption client for AWS-S3

removes the tedium of defining rails engine configuration options

Create and Manage Newsletters using the Sendgrid API

Framework to provide cqrs + eventsourcing functionality in ruby.

manage your sputnik profile

A generator for tiny Rails apps

Transmitter provides a conveniance method to your Rails controllers for creating SSEs.

Library for communicating with the xero API