EconBiz offers the possibility of searching for relevant economics publications. Thanks to the filter option, the search can be limited to content that is readable free-of-charge by setting a tick next to “only free full texts”.
With EconBiz you can also find open access resources for your teaching. Whether these are Open Educational Resources with corresponding open licences, you must check for the respective resource in each individual case. If you would like assistance with your search, you can find help on EconBiz here.
EconBiz contains articles from specialist journals, working papers, books and book essays, including the full texts of RePEc and EconStor as well as from ECONIS (catalogue of the ZBW), BASE and Online Contents Economic Sciences (OLC).
Four pro tips for searching open access literature and (open) resources for teaching with EconBiz can be found in this blog post.