It just arrived in the comments field. I thought it worth a front-and-center treatment. Their existing website, The Jewish Roots of Eastern Christian Mysticism, is outstanding.

We would like to announce a new scholarly resource on the Second Temple Jewish literature preserved in the Slavic Milieux: http://www.marquette.edu/maqom/pseudepigrapha.

The site is developed by the scholars from the Theology Department at Marquette University (Milwaukee, USA). The resource provides original manuscripts, translations, and extensive bibliographies to the following pseudepigraphical materials preserved in Slavonic language:

Slavonic Life of Adam and Eve
Adam Octipartite
2 Enoch
Sataniel Text
Apocalypse of Abraham
Testament of Abraham
The Ladder of Jacob
Joseph and Aseneth
Testaments of the Twelve Patriarchs
Testament of Job
Life of Moses
Apocryphal Fragments about David, Solomon, and Elijah
Ascension of Isaiah
3 Baruch
4 Baruch
Pseudo-Danielic Fragments
Apocalypse of Zosimus
Ahiqar
The Word of the Blessed Zerubabel
The Josippon
Palaea Historica
Interpretive Palaea
Palaea Chronographica
and some other materials