BASE, the Bielefeld Academic Search Engine, is a metasearch tool for the Bielefeld Digital Library. Substantial open access resources are included, both open access journals and open access archives. Searches can be limited to the free content, so this tool can be useful for everyone, not just the Bielefeld Digital Library users.
Thanks to Ilkay Holt, E-LIS Editor, Turkey.
This post reflects my personal opinion only and does not represent the opinions or policy of the BC Electronic Library Network or the Simon Fraser University Library.