If there’s anything you ever wanted to know about the Irish written word, it’s probably here. This is an impressive corpus that covers a wide, wide range of subjects and time periods. As such, it also includes many medieval texts.
Visit site: CELT.
Hidden in this database is a wonderful overview of all Irish chronicles mentioning the Vikings between 794 and 902. It’s not frequently updated, but remains a great tool.
Visit page: Vikings in Irish Chronicles.