An idiosyncratic selection of some other interesting projects related to compilers and language design:
| Algae | matrix programming language developed at Boeing |
| Arc | new dialect of Lisp, with lots of insightful commentary |
| C-- | sanitized subset of C, useful as an intermediate representation |
| Cil | likewise |
| Joy | stack oriented functional programming language |
| J | array processing language influenced by APL |
| K | proprietary successor to APL, for database and time series applications |
| Q | "equational" functional programming language, with music synthesis applications |
| Nu | Lisp-like syntax, interoperable with Objective C |
| Clojure | Lisp dialect compiled to Java byte code |
| Qi | Lisp dialect with improved type safety |
| Hancock | C superset for data mining from AT&T |
| transterpreter | concurrent process language and runtime environment |
| Lambda the ultimate | well informed discussions mostly about functional programming |
| Factor | a practical stack language |
| cola | combined lambda/object architecture (thanks SM) |