Is the Perl .plx filename extension ever used in real-life?

Question

ActiveState Perl installs an IIS script mapping for the extension .plx. Is this actually used in real life or just something specific to ActiveState?

Answer 1

No, it's not just from ActiveState. O'Reilly's Learning Perl on Win32 systems recommends naming scripts with a .plx extension to disambiguate them from perl modules (with .pm) and non-executable perl libraries (.pl). Nowadays however I'd name anything that is going to be directly run as .pl.