I agree 100% with this post. Reagent is the best UI library that I've ever worked with. It's powerful, just works, and it's easy to understand what's going on under the hood.

I was able to teach a data scientist on our team how to build UI components in Reagent in less than 24 hours to the point that he was able to build his own visualizations for his data analysis with minimal guidance, that's how intuitive it is.

Compare that with Om which I've tried for about a month to grok and still can't get a handle on it. The only advantage that Om gives you over Reagent that I can see is global undo out of the box, but it's at the cost of significant added complexity. And if that's what you were really after you could just build one global state atom in Reagent to give you global undo without all the added complexity of Om. What am I missing here?

I think Reagent's model is the perfect blend of ClojureScript + React. The only shortcomings are that it's not actively maintained and I wish there was a more robust library of helper methods baked in, but those are easy tradeoffs to make for something so simple and powerful.