SlimeVR is a fully open source hardware and software project turned company that produces both he required hardware and software for IMU based Full Body Tracking for VR, Motion Capture and VTubing. Over the last 4 years we have grown from a team of 2 and a desire to make cool stuff to an industry leading company with over 10 full time employees, 29.000+ customers and an active community over on discord with 69.000+ members!

In short, SlimeVR uses IMU's (Inertial Measurement Unit) to estimate a virtual skeleton that can then be used for various purposes such as: Virtual Reality games, Motion capture through VMC or with BVH files and Vtubing which has become more and more popular over the years. Whilst we sell the hardware needed, people can also fully build their own hardware with off the shelf components!

We have a huge passion for open source and we love sharing our ideas and mindset with the rest of the world. On top of that, we would love to hear from everyone else as well! That's why we would love to attend the Gaming and VR Devroom at fosdem 2026.

We would love to showcase and share how we came to be, and show off some of the hardware and software that we have developed over the years. Including our latest and greatest recently announced Butterfly trackers. http://slimevr.dev/smol Our software has seen tremendous strides in recent years and has been embraced by names such as Sony for their motion capture product (Mocopi).

We would also love to show off some of the hardware in action! If possible we could set up a demo where the avatar on screen is tracked off of the speaker in real time!