Copycopter Server is open source. Run it as a web service.
simple database import/export app
File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.
Overwrite Heroku's auto-generated database configuration
ActsAsEavModel allow for the Entity-attribute-value model (EAV), also
ruby wrapper for Badgeville RESTful API