We support all projects that make OA research easier to find and more accessible, and are happy to see so many initiatives working together on this important problem. In fact, Kopernio makes use of several OA data sources including institutional repositories, pre-print servers such as arXiv and bioRarxiv, Unpaywall Data and Pubmed Central.
However, it's also important to recognise that OA content currently makes up only the minority of published research (somewhere between 25 and 40% of articles). In order to get access to the remaining 60-75% of articles, it is necessary to make use of journal subscriptions often provided through universities and other research institutions.
Kopernio makes this uniquely simple by automatically integrating with institutional subscriptions to seamlessly deliver OA and subscribed content behind one button. This way you can always get access to the best version available to you no matter where you are online, both on- and off-campus.
Manuscripts and pre-prints can be useful alternatives for paywalled articles, but are not guaranteed to contain changes from reviewer comments or post-publication corrections that the publisher's version of record does. This can cause reproducibility problems and so Kopernio goes out of its way to make sure you get the best available article version .
We've also got lots of handy features unique to Kopernio including cloud storage for your papers, article sharing features and integrations with over 20,000 online platforms. We're also the only tool to guarantee one-click access direct to the PDF (no abstract pages, logins, redirects or other hurdles).
The best way to see the difference is it download Kopernio and try for yourself!