I am a self-learner and am really interested in the writings of the Christian fathers during the Ante-Nicene period. I found an great e-book for a few dollars titled "The Complete Ante-Nicene Church Fathers Collection [9 volumes]", and I also found a set of books called "The Early Church Fathers, 38 Volumes." I'm just not sure whether either of these contains all of the writings found during that period or just a selection of them. What I'd really like to have is a list of all of the writings discovered during this period, but I can't seem to find it. Are any of you aware of such a list? I hope this isn't too loaded a question.
It's not free, and it's not complete, but The Fathers of the Church: A New Translation is the closest thing to a complete set of the writings of the church fathers that I've seen in English. It includes over 120 volumes of writings, though many of these relate to the post-Nicene period. It's frequently cited by other works, like the Ancient Christian Commentary on Scripture.
I've often turned to it when the out-of-copyright Ante-Nicene Fathers simply doesn't provide the material I'm looking for, like Origen's Commentary on Romans. And I find that the translation is usually better, both in accuracy and readability.
As mentioned, the volumes aren't free online, but thankfully many pages are accessible through Google Books – Origen's commentary linked above can be previewed on Google Books, at least in the USA.
Unless I am mistaken, there has never been an English translation set that encompasses absolutely all the ante-Nicene writings. Most people use ccel.org to read the Ante-Nicene Fathers edited by James Donaldson and Alexander Roberts which, unless I am mistaken, is the most comprehensive English translation set of the ante-Nicene writings. If you want to compile a list of all the ante-Nicene writings, you would probably need to resort to reviewing Jacques Paul Migne’s Patrologiæ Cursus Completus: Series Græca (161 vol.) and Series Latina (220 vol.), but of course, you need to know Greek and Latin.
They are available for free with the free download of e-sword:
This is an excellent tool with many free resources included.