Clozure CL
Clozure CL is an implementation of Common Lisp.
Other implementations of Common Lisp.
Clozure CL is a free Common Lisp implementation [...] Some distinguishing features of the implementation include:
- fast compilation speed
- native OS threads
- precise, generational, compacting garbage collector
- convenient foreign-function interface
Clozure CL used to be called OpenMCL. It is also sometimes called CCL. You will see the three names being used interchangeably.