Registry of Accessible Web Resources

OpenDOAR is the quality-assured, global Directory of Open Access Repositories. You can search and browse through thousands of registered repositories based on a range of features, such as location, software or type of material held.

Open-i service provides search and retrieval of abstracts and images (including charts, graphs, clinical images, etc.) from the open source literature, and biomedical image collections.

OpenLibrary.org is an online California State Library run by the non-profit Internet Archive which enables patrons to browse and checkout millions of digital books using their computers and mobile devices.

OpenSTAT is an open data platform powered by PC-Axis a user-friendly application with versatile possibilities for presenting statistical tables with visualization features.

OpenStax is the world’s largest publisher of open education resources (OER) and a provider of interactive learning technologies and education research for high school and college. We are a nonprofit initiative of Rice University.

OpenThesis.org is a searchable thesis & dissertation database, which helps increase the availability and utility of these important documents.

Openventio Publishers is a pioneering publisher of open access journals across a wide range of disciplines.

Open Educational Resources (OER) are any type of educational materials that are in the public domain or introduced with an open license.

Operations Research and Decisions is an open access, peer-reviewed journal which includes original scientific papers covering the full scope of operations research. Special emphasis is placed on quantitative methods and their application as a tool to solve economic, social and management problems.

Operations Research Perspectives is an exciting new open access journal in the field of Operations Research and Management Science. It provides a dedicated and safe environment for open access research, with fast online publication on ScienceDirect for all accepted papers.