Jāmiʻal-Makhṭūṭāt al-Islāmīyah is a site that compiles and offers direct links to an extensive rich collection of Arabic and Islamic Manuscripts. One can easily browse the collection either by manuscript title or by location through the name of the institution that houses the manuscript. The interface is only available in Arabic which can be considered an obstacle, yet this project is quite useful and worth a try.
The Middle East Digital Humanities Digest is a blog created by the Digital Humanities program at the American University in Cairo Libraries & Learning technologies.