Sometimes these meetups take the for of a conference or event. ... The actual largest event of that kind is FOSDEM. Unlike other events, FOSDEM does not focus on a single community or technology. Instead it welcomes all people interested or participating in free and open source software.
— Forge Your Future with Open Source by VM (Vicky) Brasseur (Page 114)
I really miss going to FOSDEM. Even though I'm terrible at socializing with strangers and I end up just being alone among a huge group of people, I still really love it.