If you are not familiar with Diigo, it is a free digital research tool / social bookmarking application with multiple tools to aid the collection, annotation, organization, and sharing of items on the internet. As a professor, I use it in classes to encourage students to work collaboratively by sharing links to sources and analyzing their contents and usefulness for their peers. I also maintain public groups, which anyone may join, for locating resources according to subject. While it is in some ways similar to tools like Mendeley, I prefer Diigo for its integration within multiple platforms, web tool bar, rss feed integration, and ability to annotate and highlight within apps across your synced devises. You may upgrade to a paid version, but so far I find the free version to be more than adequate. Teachers, we are allowed certain functions for free that are otherwise unavailable to basic, unpaid members.
This is a link to my public Islamic Art group in Diigo. Feel free to join or browse. You will find many groups spanning multiple topics. (if the weblink does not open automatically, paste this address into your browser. https://groups.diigo.com/group/islamic-art-and-architecture
Art History Resources 