Kango(cross-browser extension framework). What are the alternatives?

Question

JavaScript

I found this wonderful framework for writing browser extensions, kangoextensions.com
It's nice, but I don't think it's developed much lately.
I am looking for alternatives, do not tell me?

Answer 1

there is
crossrider.com/developers
with signs of activity on the blog)
Each of them has its own advantages, ease of assembly and debugging, test and understand, having mastered one, quickly master the other. At the moment I prefer Kango.