Charles Muller has licensed the Digital Dictionary of Buddhism under a Creative Commons license. The dictionary is a compilation of Buddhist terms and texts — as well as names of temples, schools, and people — found in East Asian Buddhist canonical sources. The dictionary project, which began in 1986, is thought to be the most comprehensive compilation of Buddhist terms available in English today.
Digital Dictionary of Buddhism
Unfortunatelly it looks like Charles Muller dictionary is now NOT licensed under CC license. It’s a pity but one can not even reproduce it without permission. I don’t know how it works, but if it has had been CC licensed before, maybe it is allowed to use previous version within CC restrictions.