O'Reilly_Open_Source_Convention
O'Reilly Open Source Convention
1999–2019 American annual free and open-source software convention
The O'Reilly Open Source Convention (OSCON) was an American annual convention for the discussion of free and open-source software. It was organized by publisher O'Reilly Media and was held each summer, mostly in Portland, Oregon, from 1999 to 2019.