Clozure Associates develops, hosts, and maintains Clozure CL
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
For Clozure CL support or to enquire about custom extensions to Clozure CL, please e-mail firstname.lastname@example.org