If you would like to try out Clasp, there are binary packages for downloading, and if you are running Arch Linux, there is an AUR package available for building from source.
Also see the following in case you would like to follow Clasp's development:
- #clasp on the Libera Chat IRC
- Clasp's development mailing List
- The official Github repository
- drmeister's personal blog
Common Lisp implementation