There are a lot of sitemap Generators for TYPO3 in the TER available. But none of them can handle Sites created by Extbase, which are not shown in the TYPO3 page tree.
Edit Thanks to biesior, detailed informations:
Unconventional I switch in TypoScript the GET Parameter for my Extbase extension[globalVar = GP:tx_myextension_articlelisting|article > 0]
which shows Articles for a selected page. Probably I have to build my own Sitemap, consists of all normal pages plus all my Extbase articles when a visitor calls the /sitemap.xml. But how to do this challenge?
/Edit
Any suggestions?
pages
in database and find the differences, then (maybe) we'll be able to give some hint – biesior