Kawaii – Get Your App's script/console On The Web
As the developers say, Kawaii is "a script/console that runs in your Web browser." Essentially, it lets you debug your app and play around with the data in your database in real-time from afar. Unlike script/console, however, Kawaii cleverly formats ActiveRecord responses (such as database objects) into an easy to read table. It also supports multiple tabs, allowing for several trains of thought to continue simultaneously.
Kawaii is open source and available on Github.