[doublerebel]

The concept is great. I use Spine.app for this myself.

A nodejs stack makes more sense to me because the app itself is powered by JavaScript, not Ruby, and then I am truly decoupled from other languages. However, I can see why someone coming from Ruby would prefer Spar -- even Spine.app includes Sprockets support for Ruby devs.

[aaronwhite]

Spar itself requires no knowledge of Ruby, that was one of the design goals. It happens to use Ruby tech under-the-hood, but no user of Spar would ever be exposed to those choices.