TDV İslam Ansiklopedisi, you can access all articles of the encyclopedia.
https://islamansiklopedisi.org.tr/
To learn more about TDV Islamic Encyclopedia and electronic encyclopedia, https://islamansiklopedisi.org.tr/hakkinda/
You can access the Turkish and English versions of the 10-volume encyclopedic work called Antikçağdan XXI Yüzyıla Büyük İstanbul Tarihi.
İstanbul Kadı Sicillleri, you can access the entire content of the 100-volume work.
https://www.kadisicilleri.org/