I've been happily running SBCL and CCL on Linux and OSX for years without issues. CCL on Windows too. Guile has 1-2 people working on it part-time, and Windows

I've been happily running SBCL and CCL on Linux and OSX for years without issues. CCL on Windows too. Guile has 1-2 people working on it part-time, and Windows/OSX are not a priority because: + GNU project, duh. + Nobody in Guile-land cares about Windows/OSX enough to step up and fix issues. + Even if they did, Stallman would tell them not to. So the state of affairs is indeed very different from the CL Lisp implementations. Not to mention, Guile has pretty much no userbase to speak of. There are commercial entities releasing products with SBCL and CCL in addition to the very healthy opensource community.