The back end is way more mature than front end SPA stuff so I'll just list some things I'm really glad to have in that space

- re-frame : like redux but better

- re-learn : lets you create tutorials for application with no changes to dom

- cljsjs/filesaverjs : cross browser file download dialog

- cljs-react-material-ui : material ui react library port

- camel-snake-kebab :useful for changing casing

- com.rpl/specter : easy way to deal with large nested data structures

- stylefy : inline styles with support for media queries and animations (all with clojure data structures!)