Alexandria Digital Research Library (ADRL) 

UCSB's open access ETDS are in ADRL Due to copyright restrictions and a need to obtain permission from the authors, not all years are available.

eScholarship  

UC's institutional repository and journal publishing platform. Not all campuses have ETDs in eScholarship. Due to copyright restrictions and the need to obtain permissions from authors, not all years are available online. UC campuses began accepting ETD submissions different years. For details see ETD Preservation and Access Sevice: California Digital Library. UCSB's open access ETDS are in ADRL

Networked Digital Library of Theses and Dissertations

An international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). The website includes resources on 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.

Open Access Theses & Dissertations

PQDT Open (Proquest):

Provides the full text of open access dissertations and theses free of charge. The authors of these dissertations and theses have opted to publish as open access.