(why I care about Lisp? Read on...). Two more options for the motivated parenthesist:
- Lispworks (Personal Edition) is a real IDE, great documentation. Dozens of cool features (ORB, COM/Automation, SQL integration...) - personal edition is limited to 5 hours per session, which is ok to try it out.
- The real hands-on-feeling comes up with LispBox - you'll find emacs-based, hassle-free, out-of-the-box versions. They are companions to one of the best books I've read during the last month - Practical Common Lisp by Peter Seibel.
And: Lisp has interstellar experience. Ruby doesn't.
Expect more on Lisp in the near future :-)