Tibet Art Large and very nicely designed site with Tibetan art.
www.brocades.net offers mail order framing for individual clients. Located in Canada.
Motilal Banarsidass Amazing selection of religious books. Their online database shows some titles they have, but not all. We have always received good service from this India based company. In the business since 1903.
Asian Classics Hundreds of original Sutras, commentaries, and other texts in Tibetan freely downloadable.
Nitartha Tibetan-English online dictionary and quality Tibetan font software (non-free).