Free Chinese and Sanskrit Buddhist Volumes of the Bibliotheca Philologica et Philosophica Buddhica (Soka University)
The Research Centre for Buddhist Philology of the International Research Institute for Advanced Buddhology of Soka University (Japan) has made freely available online the first 11 volumes of the series Bibliotheca Philologica et Philosophica Buddhica (BPPB) 1998-2010 in PDF. Since the books are complete, downloading takes a while, but it is worth waiting.
Some titles: Vol. VI. Michael Zimmermann, A Buddha Within: The Tathagatagarbhasutra... (2002); Vol. IX. D. Stevenson and H. Kanno, The Meaning of the Lotus Sutra's Course of Ease and Bliss... (2006); Vol. X. J.
Nattier, A Guide to the Earliest Chinese Buddhist Translations: Texts from the Eastern Han and Three Kingdoms Periods (2008) + Addenda; Vol. XI. Seishi Karashima, A Glossary of Lokaksema's Translation of the Astasahasrika Prajnaparamita (2010). Here the whole list (in English).