DXR needs Python/CGI to run :-)
My favorite difference between the Woboq Code Browser and DXR is to have a pure static website generated ahead of time without requiring dynamic code or a database on the HTTP server.
Well, thanks for the downvote. I'm administering the server code.woboq.org is running on, so I think I have reasons to like that static HTML fact ;)
Sometimes a single downvote is just someone mis-tapping while scrolling on a touchscreen. At any rate, your post is not gray right now.
Which they mention right there in the second paragraph.