EWTN Patristics Library
Another site from which ANF and NPNF may be downloaded. Prefatory notes indicate that EWTN has corrected the texts; they may be more accurate than those posted to other sites.
English
New Advent: Fathers of the Church
This archive has e-texts of Ante-Nicene Fathers (ANF) and Nicene and Post-Nicene Fathers (NPNF) arranged alphabetically.
Early Church Fathers (Calvin College)
An archive containing all volumes (less indices) of the Ante-Nicene Fathers (ANF) and Nicene and Post-Nicene Fathers (NPNF) in searchable format. All works can be freely viewed online, downloaded for free as text files, or downloaded as pdfs for a fee.
Internet Medieval Sourcebook
The three primary divisions of the Sourcebook are the Selected Sources page which presents a selection of primary and secondary texts chronologically and topically, intended to be a student resource; a Full Text Sources page which groups all archived primary texts by type and period; and Saints’ Lives page devoted to hagiographical texts and resources. The …
Early Church Fathers (Roger Pearse)
A Web library of out-of-copyright translations of Late Ancient authors, both Christian and not, that are not included in the Ante-Nicene Fathers or Nicene and Post-Nicene Fathers series. The site’s author does an exceptional job with formatting and includes volume introductions, notes, and also additional material for select authors. Also provided are links to fonts …