FOSDEM 2027 and Delta Chat Community Day(s)

November 11, 2026 by Delta Chat team

Calling chatmail, Delta Chat and webxdc hackers and communities! FOSDEM happens in Brussels on 30 and 31 January 2027, and together with our friends from XMPP and Matrix we are co-organizing the Decentralised Messaging devroom on SUNDAY (see also the XMPP blog post).

If you hack on chatmail relays, the growing number of chatmail clients, write webxdc mini-apps or bots like a lunatic, or research decentralized messaging or just use things in your communities, please consider submitting a talk: Share something others can learn from rather than a product pitch, in a 25 minute slot or a 5 to 10 minute lightning talk.

Submission deadline is Friday, 20 November, 23:55 UTC on FOSDEM pretalx.

Meet us at our stand. We also have a confirmed Delta Chat stand at FOSDEM (location to be announced). Expect fresh stickers and some of the people behind or involved with Delta Chat, chatmail relays and webxdc. Drop by with your questions, ideas and bug reports, try out mini-apps together, or bring your phone and leave with a few new contacts, made the way we like it best: by personally scanning each other’s QR codes, and getting to know new circles in a people-to-people manner.

Delta Chat Community Day(s) right after FOSDEM.

Two people in masks posing in a vaulted cellar

A full room listening to a talk at the Delta XI unconference in Kyiv, 2018

Developers in a Kyiv street preparing location streaming for Android, 2019

Group photo of 19 people at the 2019 Eclectic Tech Carnival in Athens, where we held Delta Chat workshops

A projector showing running processes on the command line during the /ETC workshop in Athens, 2019

A talk slide on the beamer during the sysadmin sessions at Xyiv in Kyiv, 2019

Cover of the 2020 Delta Chat needfinding report on multi-tool contexts, with a photo of a protester holding up a phone

Developers on a couch with laptops, working on Delta Chat Desktop in Kyiv, 2019

Paper sketches and cards from a UX planning session at Xyiv in Kyiv, 2019

A slide about the Heart of Code hackerspace at the Xyiv unconference in Kyiv, 2019

People around a table during the first Delta Chat UX testing in Kyiv

Someone holding a delta.chat sticker in front of their face at Delta XI in Kyiv, 2018

A black and white cat in a box with a delta.chat sticker

Poster reading Engage in Revolutionary Optimism

Someone in a monster mask at the Delta XI party in Kyiv, 2018

A performance in front of a projection at a Delta Chat party

Delta Chat testers sitting on the ground, scanning printed QR codes with their phones

Trees and sky reflected in a puddle with floating leaves

People around a campfire at night below a tall chimney

The devroom has only so many slots and the FOSDEM weekend is always too short, so starting on Monday, 1 February 2027, we invite to Delta Chat Community Day(s) for talks, sessions and hanging out across our user and contributor communities. Anyone who submits a talk to the devroom and does not get a slot might thus just do a session on Monday instead 💜 Speaking of which: we have not actually looked for a location yet, so if you know a good place with room for a little crowd, with some technical and preferably also kitchen infra, please be so kind to tell us at delta@merlinux.eu or DM us on the fediverse at @delta@chaos.social. We can also mobilize some money for renting. Oh, and if you want to chip in, donations are always welcome and helping exactly such events and contributors’s travels costs 💜

Stay tuned: join the Delta FOSDEM 2027 channel

We will announce the devroom schedule, the location of our stand and where the community day(s) happen in a new Delta Chat channel. If you have Delta Chat installed, just tap Join “Delta FOSDEM2027”, or scan the code with Delta Chat or your phone’s camera: