"Joyent Slingshot " beer to ruby on rails community

The joyent slingshot is lightweight framework, which is customizable and allows ruby on rails application to run offline with simple and transparent data synchronization.

Joyent Slingshot enables Rails to break free of the browser. It breaks down the wall between a Web application and a desktop application without losing what makes a Web application great: the ability to rapidly develop, deploy and update, now for desktop applications.

And for more details visit: official web site