FreeCAD Day 2026 is a [FOSDEM](https://fosdem.org/2026/) pre-conference for users and developers of the open-source parametric 3D design package [FreeCAD](https://freecad.org). Anyone is welcome to attend: there is no charge, but pre-registration is requested so we know how many people to expect. If you are interested in presenting at the event, please see the Call for Participation and submit your idea for a lightning talk! Don't forget to also join us at FOSDEM in the Open Hardware and CAD/CAM Devroom on Sunday, 1 February 2026.