As of December 2011, we have discovered over 11,500 OJS installations from around the world:

Technical Note: The data used in this table is automatically harvested from OJS installations around the world. The harvesting process does not capture all installations, while any duplicates or obvious test and demonstration installations are removed from this record. Although the vast majority of installations represent traditional peer-reviewed journals (see Edgar & Willinsky, 2010), OJS is also used, on occasion, for reports, monographs, learning management systems, graduate and undergraduate student journals, and a variety of other experiments and innovations in online publishing and knowledge sharing.