O'Reilly Open Source Convention

O'Reilly Open Source Convention
OSCON flag
StatusInactive
GenreOpen Source (mainly software)
Location(s)Portland, Oregon (with exceptions)
CountryUnited States
Inaugurated1999 (1999)
Most recent2019 (2019)
Organized byO'Reilly Media
Websitewww.oscon.com

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.