Lem Alternatives
Lem is described as 'Cross-platform and highly extensible Commo Lisp editor/IDE' and is a IDE in the development category. There are three alternatives to Lem for Windows, BSD, Linux and Mac. The best alternative is LispWorks. It's not free, so if you're looking for a free alternative, you could try LispIDE.
LispWorks is a commercial implementation and IDE for the Common Lisp programming language.
LispIDE is a basic graphical shell for several Lisp and Scheme implementations available for Windows. LispIDE seems to work with: Corman Common Lisp, Steel Bank Common Lisp, CLISP, Gnu Common Lisp, Gambit Scheme, Bigloo Scheme, SCM Scheme, Arc, newLISP, OpenLisp, Clozure Common...
Features
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