As of Fall of 2014, thousands of ancient manuscripts have become available online for free. Not only are they amazing to look at, they are great resources for researchers, librarians, and amateurs! FYI, the manuscripts do not solely focused on Christianity but religions, cultures, and works from all across the world.
“The Vatican Apostolic Library is now digitising its valuable ancient religious manuscripts and putting them online via its website, available for the public to view for free, as well as turning to crowdfunding to help it complete its work”
More info: http://www.theeventchronicle.com/study/vatican-library-puts-4000-ancient-manuscripts-available-online-free/
The Vatican Library Digitization Project Site: http://digital.vatlib.it/