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Clozure Common Lisp

Clozure CL (often called CCL for short) is a free Common Lisp implementation with a long history.

19 Alternatives To Clozure Common Lisp

Armed Bear Common Lisp

Armed Bear Common Lisp (ABCL) is a full implementation of the Common Lisp language featuring both…

CLISP

CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible.
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CMU Common Lisp

CMUCL is a high-performance, free Common Lisp implementation.

Guile

Guile is the GNU Ubiquitous Intelligent Language for Extensions, the official extension language for the GNU operating system.

Hy

Hy is a wonderful dialect of Lisp that’s embedded in Python.
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LispWorks

LispWorks is a commercial implementation and IDE for the Common Lisp programming language.
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Tcl

Already one of the world’s best-selling consumer electronics brands, TCL is now the fastest-growing TV brand in North America. TCL TVs feature stylish design and the latest technology.
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Xcode

Xcode 4 is the new version of Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.