SBCL – Past, Present, Future [pdf]
Tangential question, but what Lisp is the most promising one to invest time on right now?Common Lisp still has some activity, mainly coming from SBCL, but is a bit stagnant. It has a fantastic literature and many mature implementations.Scheme is great, but a bit too fragmented. Racket seems to be gaining some momentum. The merge with Chez may be the tipping point to attract a critical mass of developers.Clojure has many interesting modern ideas, but I feel being so tied to Java and the JVM has hurt a bit in the long run.I miss a bit of innovation in the typed lisp area, like e.g. Qi or Shen which never took off. Carp [1] looks nice.[1] https://github.com/carp-lang/Carp