Clozure Associates develops, hosts, and maintains Clozure CL (CCL), a complete open source implementation of the Common Lisp standard.
Fully compiled code.
Fast, precise, compacting, generational garbage collection.
Native OS threads on all platforms.
A complete mature foreign function interface.
Full support for SLIME, ASDF, and QuickLisp.
A native IDE on OS X with Objective C and Cocoa integration.
Clozure CL is available for download from ccl.clozure.com.
For Clozure CL support or to enquire about custom extensions to Clozure CL, please e-mail firstname.lastname@example.org.
What's in a Name?
1984: Coral Sofware begins development of a Common Lisp for the Macintosh, called Coral Common Lisp (CCL).
1987: Coral Common Lisp 1.0 released.
1987: CCL renamed Macintosh Allegro Common Lisp (MACL) as part of a joint marketing effort with Franz Inc.
1988: Apple Computer purchases Coral Software. CCL renamed Macintosh Common Lisp (MCL).
1994: Digitool takes over sales, support, and development of MCL.
1998: Gary Byers forks the sources and begins porting the non-GUI portions of MCL to Linux while working for JPL.
2001: This fork released as free open source software under the name OpenMCL.
2007: OpenMCL renamed Clozure Common Lisp (CCL).