I agree @gadfly361 , competition breeds innovation, let keechma leap frog over re-frame, re-frame leap frog over keechma, ad infinitum, everybody benefits. - I am about to invest time in learning keechma, the amazing thing about re-frame is that it works, in theory it scales well to a large complex app but I haven't been there yet, I am still in the prototype phase, although clojurescript and react.js are fixed architectural decisions framework wise I haven't 100% decided, scalability is an important issue.