Lisp

Common Lisp Inplementations:

• Steel Bank Common Lisp - implementation whose design was a source of inspiration for Factor
• Clozure Common Lisp - a Lisp used in commercial applications
• LispWorks - commercial Lisp
• Franz - commercial Lisp

Learn Common Lisp:

• Practical Common Lisp
• Common Lisp HyperSpec

Other Lisp Dialects:

• Clojure - A fast modern LISP on the JVM
• Scheme - Minimalist dialect, famous for its use in education
• Pico Lisp - Terse syntax, tiny interpreter
• Arc - Paul Graham's experimental dialect