- Agent0 - Agent0 is a programming language for Agent Oriented Programming
- BASIC - A Quick, Dirty and Ugly Basic programming language interpreter
- Blocky - Blocky is a visual dialect of Common Lisp paired with an Emacs-like user interface
- Brainfuck in Lisp - Brainfuck in Lisp contains a brainfuck programming language virtual machine and a brainfuck optimizing compiler, which translates to lisp and compiles lisp to native code, and a sketch for an implementation of a lisp on brainfuck
- C - Projects that let C and Common Lisp interoperate
- CL-JavaScript - CL-JavaScript is a JavaScript programming language compiler for Common Lisp, aimed to enable scripting software written in Common Lisp with JavaScript
- cl-m4 - cl-m4 is a complete M4 programming language implementation from scratch targeted at GNU M4
- CLAWK - CLAWK is an AWK text manipulation programming language implementation embedded into Common Lisp, by Michael Parker
- cloak - cloak is an experimental implementation of the JVM for SBCL on Linux/x86
- CLPython - CLPython is an implementation of the Python programming language in Common Lisp
- E-on-CL - E-on-CL is an implementation of the E programming language in Common Lisp
- elisp - ELisp is the dialect of Lisp used by the GNU Emacs and XEmacs text editors
- F2CL - F2CL is a Fortran 77 programming language to Common Lisp translator
- Forth - Forth is a structured, imperative, reflective, stack-based programming language
- Logo-to-lisp - Logo-to-lisp is an interactive Logo environment
- Prolog - Prolog is a programming language based around logical assertions
- PseudoScheme - PseudoScheme is an implementation of the Scheme (R4RS) programming language in Common Lisp
- Qi - Qi is a new functional programming language designed to run under Common Lisp
- Scheme88 - Scheme88 is a re-implementation of Indiana University's Scheme84 programming language to run in Common Lisp
- stella - Stella is a functional programming language generating Common Lisp, Java or C++ code
- TypeL - TypeL is a Common Lisp sublanguage with strong typing and type
- Yale Haskell - Yale Haskell is an early (1993) implementation of the Haskell programming language in Common Lisp
- Ruby Parser a parser of the Ruby programming language written in CL. And also A compiler for a subset of ruby.