OSDev (foreign language)
French
- http://samypesse.fr/cours.html
- http://a.michelizza.free.fr/pmwiki.php?n=TutoOS.TutoOS
- http://sos.enix.org/fr/SOSDownload
German
- http://www.lowlevel.eu/ (Forum: [1]; IRC: irc.euirc.net, #lost)
- http://www.henkessoft.de/ (Forum: [2])
Italian
Japanese
Polish
- http://syscall.pl/
- http://osdev.pl/ - Site about Open Source, doesn't seem to be really about OSDev.
- https://tom3q.w.staszic.waw.pl/ - found this website, not much, but it can get you started