title: Are there any fairly mature Lisp/Scheme/Clojure compilers for .Net CLR?
body: <p>I am seeing several variants out there; ClojureCLR, LSharp, IronScheme, IronLisp, among others.  Are any of these actively maintained and/or anywhere close to "mature", or are they mostly experiments or dust-gatherers?  Which would be considered the most mature framework for compiling to .Net dll's and referencing other .Net dll's, if any?  Does any integrate well with Visual Studio a la at least a "Create Lisp Project" feature?</p>