I do not appreciate the mention of
http://earlymedievalmonasticism.org/listoflinks.html
Main topic is not medieval manuscripts but EARLY MEDIEVAL manuscripts. For Germany I have given a better list:
Digital collections of German libraries with medieval and early modern manuscripts http://archiv.twoday.net/stories/589172434/
For Austria see
http://archiv.twoday.net/stories/615268137/ (in German)
Klaus Graf