Where do you install non-Apple developer tools, like REALbasic or MonoDevelop? I am trying to figure out the best install location and want to follow conventions if they exist. /Applications Doesn't seem ideal, as IDEs and Developer Tools are not technically "applications" and don't look appropriate next to MS Office. /Developer Seems more appropriate but what happens to subdirectories in /Developer when Xcode is updated or re-installed? /Developer/Applications Same applies. But is it better than the root of /Developer? I currently have /Developer/REALbasic /Developer/QT /Developer/Mono Any suggestions?