Folks, I'm installing Twister for Python and the docs say Twister already comes preinstalled in >10.5. http://twistedmatrix.com/trac/wiki/Downloads However I couldn't find it with System Profiler nor with /usr/bin/find. Ideas? Is MacPorts a good idea? Thanks Op Sorry, it's called Twisted, not Twister. But still can't find it. Also I found a libxml2 dylib in /usr/lib/. Must have been preinstalled. But it doesn't show in System Profiler. So the question still stands... how to verify which unix sw is installed?