:dry_crud Generates DRY and specifically extendable CRUD controller, views and helpers for Rails applications.
:wagons Extensions to your application train running on Rails. The plugin framework for your Rails application.
:delayed_cron_job An extension to Delayed::Job that allows you to set cron expressions for your jobs to run regularly.
:raar RAAR is a ruby application to manage and browse an audio archive.
:ChangeBoxes Modeling Change as a First Class Entity - My Master Thesis.