This blogpost overviews existing collections of scanned editions of Arabic texts that can be found online. Each collection is described in the same manner in order to provide ground for comparison.

al-Maktabaŧ al-Waqfiyyaŧ

The largest collection of scanned books in Arabic (scanned images compiled into PDFs) with over 7,200 titles (~12,000 volumes), including editions of most major classical Islamic sources. The website is regularly updated and is searcheable by titles, author names and some other parameters; it can be browsed by categories.

Most texts are stored on archive.org and occasionally linked to Shamela. The collection also includes books in languages other than Arabic.

Developers: waqfeya.com

URL: waqfeya.com

Other links

http://digital.library.mcgill.ca/islamic_lithographs/— Islamic litographs @ McGill