I discovered Matthias Mann’s continuations library when Riven showcased it on these forums. I then put (a modified version of) it on top of fork/join and the result was Quasar: https://github.com/puniverse/quasar. If you’re interested, you can read about Quasar, and its Clojure API, Pulsar, in this blog post: http://blog.paralleluniverse.co/post/49445260575/quasar-pulsar
