“The OPOB promotes the idea of Petrarch’s Rerum vulgarium fragmenta as an “open,” “living” book that “grows” with its readers.” You can find diplomatic and critical editions of Petrarch here as well as commentary, translations, and the capability of comparing different editions and translations.
The Oregon Petrarch Open Book
petrarch.uoregon.edu
Welcome to the Oregon Petrarch Open Book Project: “Petrarch is again in sight.”