This is a classic translation of select works by important early church fathers. The newer one, from 1994 by Hendrickson Publishers, is a reprint of the older one by Eerdmans.
This is a continuation of the previous series. The Library has two sets. The newer one, from 1994 by Hendrickson Publishers, is a reprint of the older one by Eerdmans.
Holmes offers a bilingual edition, featuring Greek (or Latin) and English on facing pages. Introductions and bibliographies are generous and up to date.
This is the entire LOEB Classical Library online, which contains many individual books, which you would search by author or tile of work.It has multiple works from early Church Fathers. The caveat is that the translations are somewhat old. The library has the print version if you prefer.
Ante-Nicene Fathers: Translations of the Writings of the Fathers Down to A.D. 325 by 
Nicene and Post-Nicene fathers. First Series by 
Nicene and Post-Nicene Fathers. Second Series by 
The Apostolic Fathers by