Brussels / 4 & 5 February 2023


Presentations - Call for Participation

We now invite proposals for presentations.

FOSDEM offers open source and free software developers a place to meet, share ideas and collaborate. Renowned for being highly developer-oriented, the event brings together some 8000+ geeks from all over the world.

The twenty-third edition will take place on Saturday 4th and Sunday 5th February 2023 at the usual location, ULB Campus Solbosch in Brussels. It will also be possible to participate online.

Developer Rooms

For more details about the Developer Rooms, please refer to the Calls for Papers that are being added to when they are issued.

Main Tracks

Main track presentations cover topics of interest to a significant part of our audience that do not fit into any of the developer rooms, perhaps because of the topic or the large size of the anticipated audience. Presentations should be 50 minutes long including audience questions. FOSDEM covers reasonable travel expenses agreed in advance and arranges accommodation for accepted main track speakers if needed.

Questions or remarks? Contact us at

Lightning talks

Lightning talks are short, 15 minute, talks on a wide variety of topics. Anyone who has something interesting to say about a free software or open source project or topic can apply. We particularly encourage topics that do not fit into any of the other tracks.

Questions or remarks? Contact us at

Online Presentations

In addition to the in-person presentations, some tracks will also accept pre-recorded online presentations. Please indicate on the submission form whether the presentation could be offered on-campus and/or pre-recorded online.

Speakers accepted for a virtual presentation will need to prepare, record and upload it in early January, no later than Friday 20th January. Guidance will be provided. Speakers will need to be in a place with a computer with a reliable internet connection and working camera and microphone when their presentation is scheduled so they can join a video room and take questions and engage in discussion after their pre-recorded presentation is played.


All proposals for presentations at the event should be submitted through Pentabarf: If you already created an account in the system for a previous edition, please reuse it rather than re-registering. You can reset your password here:

When making a proposal, please select the appropriate track.

If the topic fits into a Developer Room, then please refer to that room's call for papers, listed here and select that room as the "track". Select Lightning Talks for a 15-minute Lightning Talk outside the developer rooms.

Submissions will be reviewed as they are received on an ongoing basis. The final deadline is 15th December but some tracks may close earlier if they fill up or the respective call for papers specifies an earlier date.

The conference language is English. All content must relate to Free and Open Source Software. By participating in the event you agree to the publication of recordings, slides and other content provided under the same licence as all FOSDEM content (CC-BY).

All deadlines are at 23:59 UTC.