GNU Common Lisp

Not to be confused with CLISP, another Common Lisp implementation by GNU.

GNU Common Lisp (GCL) is the GNU Project's ANSI Common Lisp compiler, an evolutionary development of Kyoto Common Lisp. It produces native object code by first generating C code and then calling a C compiler.

GNU Common Lisp

Developer(s)	GNU Project
Stable release	2.7.1 / April 11, 2025; 27 days ago (2025-04-11)[1]
Repository	git.savannah.gnu.org/cgit/gcl.git
Operating system	Unix-like, Microsoft Windows
Type	Interpreter, compiler
License	LGPLv2[2]
Website	www.gnu.org/software/gcl/

GCL is the implementation of choice for several large projects including the mathematical tools Maxima, AXIOM, HOL88, and ACL2. GCL runs under eleven different architectures on Linux, and under FreeBSD, Solaris, Mac OS X, and Microsoft Windows.

Last stable release of GCL is of April 11, 2025.^[1]

See also

• Free and open-source software portal

• CLISP – another GNU Project Common Lisp implementation