OATD.org
- This is an index of over 3.5 million electronic theses and dissertations (ETDs). To the extent possible, the index is limited to records of graduate-level theses that are freely available online.
- OATD.org aims to be the best possible resource for finding open access graduate theses and dissertations published around the world. Metadata (information about the theses) comes from over 1100 colleges, universities, and research institutions. OATD currently indexes 5,153,410 theses and dissertations.
Google Scholar

- 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.
NDLTD.org
- The Networked Digital Library of Theses and Dissertations (NDLTD) is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). We support electronic publishing and open access to scholarship in order to enhance the sharing of knowledge worldwide. Our website includes resources for university administrators, librarians, faculty, students, and the general public. Topics include how to find, create, and preserve ETDs; how to set up an ETD program; legal and technical questions; and the latest news and research in the ETD community.
ProQuest
- ProQuest is committed to empowering researchers and librarians around the world. Its innovative information content and technologies increase the productivity of students, scholars, professionals and the libraries that serve them. Through partnerships with content holders, ProQuest preserves rich, vast and varied information – whether historical archives or today’s scientific breakthroughs – and packages it with digital technologies that enhance its discovery, sharing and management. For academic, corporate, government, school and public libraries, as well as professional researchers, ProQuest provides services that enable strategic acquisition, management and discovery of information collections.







