Howard Thurman Digital Archive located in the Pitts Theological Library at the Candler School of Theology in Emory University, Atlanta, Georgia.
Sermon Index audio, text and videos from great preachers including A.W. Tozer, Warren Wiersbe, Corrie ten Boom, Leonard Ravenhill and more. Also included is an extensive collection of readable online books from the early church fathers to more recent theologians and preachers.
The Complete Works of John Wesley from https://godrules.net/index.php