Spotted at FOSDEM; this is a quite an exhaustive list of conferences and events about free and open source software: https://floss.events/2019/events.html
Lenz Grimmer's random thoughts
Technology, Open Source Software, Politics and Life
Spotted at FOSDEM; this is a quite an exhaustive list of conferences and events about free and open source software: https://floss.events/2019/events.html