Christian Classics Ethereal Library is a digital library of hundreds of classic Christian books selected for edification and education. Including full text of Anti Nicene Fathers, Nicene and Post Nicene Fathers (series 1 and 2) and many others
Global Digital Library on Theology and Ecumenism (GlobeTheoLib) is a multilingual online library offering access free of charge to full-text articles, journals, books and other resources on theology, intercultural and interreligious dialogue, ethics, and ecumenism in World Christianity. Participants also have the possibility to contribute their own documents to the library.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines.
Oxford Index: A free discovery service, the Oxford Index lets you search across Oxford’s digital academic content with a single click, and find related content every step of the way.
Sharing the word: Full text open source theological library resources freely available through the Internet. It is specifically intended to assist seminarians, theology students, clergy and pastoral workers.