Each of the four books in its own HTML file, with notes, at Christian Classics Ethereal Library. From A Select Library of Nicene and Post-Nicene Fathers of the Christian Church, second series, vol. 9.

Appears to be the same translation as at CCEL, but without notes. The benefit of this version, at St. Nicholas Orthodox Church, Dallas, is that you can jump to a particular chapter.

Translated by Elizabeth Barrett Browning.

The story of Barlaam and Ioasaph, by "John the Monk". Traditionally ascribed to St. John Damascene, but possibly actually the work of St. Euthymius the Georgian.

Each chapter in its own file, with links to previous, next, table of contents, or any other chapter. If you are using a graphical browser, this is the online equivalent of a "large print" edition.

Two excerpts from the writings of St. John of Damascus.

Extracts from the saint's writings on topics including free will and Paradise.