Jewish Studies
Texts Online
The Posen Library of Jewish Culture and Civilization: Open access, but users need to register.
Open Siddur: Jewish liturgy and liturgy-related content in the Public Domain. Founded and operated by Aharon Varady since 2000.
The Jewish Library (WikiSource; Hebrew interface): Source Hebrew texts. Curated by Rabbi Dr. Seth (Avi) Kadish, Dept. of Jewish Thought, Oranim College, Israel.
Sefaria: A library of interconnected Jewish texts from all periods, in Hebrew and English translation.
Jewish Bible: Tanakh and Mishneh Torah: The Hebrew Bible (Tanakh) in five editions (one with cantillation marks), English (JPS 1917), parallel Hebrew and English (voweled Hebrew and JPS English), and parallel Hebrew and French (voweled Hebrew and Rabbinat French); Mishneh Torah.
The Dead Sea Scrolls
The Dead Sea Scrolls and Other Hebrew MSS Project: The Oriental Institute, University of Chicago.
The Digital Dead Sea Scrolls: The Israel Museum collection.
The Leon Levi Dead Sea Scrolls Digital Library: Israel Antiquities Authority and Google.