This time
courtesy of the Bodleian Library - it's in three categories, with two of them interesting and helpful for non-library users, since they are open access.
And the University of Notre Dame somewhere in the United States has a
digital library of their pre-1600 manuscripts, searchable also by keywords - at least this is what the site promises, I had a timeout error when I tried my usual keyword.
And finally, a
truly huge collection of links to museum databases and digital collections. It's 147 items long, not all of them medieval, but certainly with plenty of useful and interesting databases.
And now I finally have a few less tabs open in my browser!