Size of code could be a good reason: This appears to be just 43kb: https://github.com/Matt-Esch/virtual-dom/blob/master/dist/virtual-dom.js https://github.com/

Size of code could be a good reason: This appears to be just 43kb: https://github.com/Matt-Esch/virtual-dom/blob/master/dist/virtual-dom.js https://github.com/Matt-Esch/virtual-dom/blob/master/dist/vi... Whereas Facebook react 0.13.1 (without addons) weighs in at 599kb, or 121kb minified. Note that I know almost nothing about this project. It may do less than React, be slower, etc... But if it does a half decent job with far less code then it's very compelling.