HimeraClojureScript compiler as web service, allowing to execute Clojure code interactively, online, without installing anything; from an iPad for instance
Documentation tools
Marginalia «Ultra-lightweight literate programming for Clojure and ClojureScript inspired by docco»
Slamhound «rips ns forms apart and reconstructs them» does not reconstruct them correctly in every case; check-in before running, analyze the suggestions, merge-in the one that are useful, discard the others
Leiningen Pretty Print plug-inpretty-print a representation of the project map; useful for debugging a project, especially the effect of various profiles being applied