Why not spin up an Ubuntu VM in VMware or virtualbox? I'm not knocking the koding terminal, but "I want a Unix environment without dual-booting" is a fairly standard VMware use case.

Spinning up a Virtualbox, especially on a machine with low resources unfortunately is a kill. Besides the Terminal, Koding has features like private Groups, Collaboration, Online editor and so on. That means once you create and begin to use a VM, you can access it from everywhere without any hassle with just one login!

Pretty much took the first few words out of my mouth, there. The fact that this is accessible from any web browser I think is the killer feature. I can't install putty or access ssh on every machine I use.

Basically, this is just plain awesome. Cheers!

Koding Dev here. There is also a Rails app that let's you create Rails instances very easily! Look at the screenshots here: https://github.com/fatih/RailsDashboard.kdapp

This is already in our Apps section. Just install and use it. Let me know if you like it or something goes wrong :)