Jul 20, 2023

Clozure CL is a free Common Lisp implementation

Clozure CL formerly known as OpenMCL is a free Common Lisp implementation. Features include

  • A fast, precise, compacting, generational garbage collector written in hand-optimized C. The sizes of the generations are fully configurable.

  • Full native OS threads on all platforms. The API includes support for shared memory, locking, and blocking for OS operations such as I/O.

  • Full Unicode support.

  • Excellent debugging facilities. The names of all local variables are available in a backtrace.

  • A complete, mature foreign function interface.

  • Many extensions including files mapped to Common Lisp vectors for fast file I/O; thread local hash tables and streams to eliminate locking overhead; cons hashing support.

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