Arjomand, Said Amir (ed.), Authority and Political Culture in Shi'ism (Albany: State University of New York Press, 1998).
Fordham's Internet Islamic History Sourcebook.
Renard, John (ed.), Islamic Theological Themes: A Primary Source Reader (Berkeley: University of California Press, 2014).
The Documents page of Bridging Cultures Bookshelf: Muslim Journeys
The Quranic Arabic Corpus: an annotated linguistic resource which shows the Arabic grammar, syntax and morphology for each word in the Quran.
Al-Tafsir: Arabic and English commentaries on the Qur’an from a wide variety of viewpoints. It is the first website to cover all seven schools if Islamic law.
Fondation Max van Berchem's Thesaurus d'Epigraphie Islamique
Islamic Law Materialized: The project examines both edited and unedited Arabic legal documents from a new, comparative perspective.
Asnad: Digial Persian Archive
al-Maktaba al-Waqfiyya A library of scanned PDFs in Arabic
al-Meshkat.net A searchable database of classical Arabic texts
Al-maktaba al-shamila A library of downloadable Arabic texts
A Porsopopography of the Scholars of al-Andalus (registration required)
Knowledge, Heresy, and Political Culture in the Islamic West (9th-15th centuries) (registration required)
al-Warraq Searchable texts in Classical Arabic