Sanskrit-Tibetan-Chinese-English Texts Available Online
The Thesaurus Literaturae Buddhicae (TLB) is a quadrilingual presentation of Buddhist literature sentence by sentence in Sanskrit, Chinese, Tibetan and English. See Bibliotheca Polyglotta. If that link does not function, paste this link in your browser: https://www2.hf.uio.no/polyglotta/index.php and click on the link to the Thesaurus Literaturae Buddhicae
So far these are the texts available:
Also note that there are new links posted on our Resources page (use link to the right). These additions include an excellent resource for Tibetan studies from Columbia University, translation work from Dan Martin, and the publications of the International Association for Buddhist Thought and Culture.