Version: 6.1.1 || Release Date: 2013-01-09 || License: Commercial with demo ($0 - $4500) Developer: LispWorks | App Owner: gorbag

Free (personal use) version of the commercial LispWorks IDE, an excellent implementation of Common Lisp, particularly considering the price. See review comments for notes on other editions.

5.0 is universal; 32 and 64 bit editions are now available as well (in the commercial versions). The Enterprise version includes an Orb, as well as Knowledgeworks, a Prolog/RETE based expert system development tool.

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1 Opinion

Commercial version adds ability to dump new standalone applications, not timeout after several hours of use, etc. The personal version is more than adequate for developing Lisp language software, differing mostly in matters of convenience from the commercial version. An upgraded version (Enterprise edition) adds capabilities such as an ORB, KnowledgeWorks (essentially, a Prolog development environment with certain expert system enhancements) and other tools. Cross-platform; free and commercial versions available for Linux and Windows as well as Mac.