Hubris is Oxide Computer Company's open-source microcontroller operating system written in Rust. Think of it as freeRTOS with mandatory MPU, debugger, and Rust borrow semantics on all system calls.

It's distinctive due to offering strong isolation/security guarantees for its size class. and focusing on a Rust-based "batteries included" development and debugging flow. The first is an interesting niche to fill and the second should ease adoption.

However, thus far core contributors have all been American and (presumably) associated with Oxide. A few small contributions from Europe and China may indicate commercial users but do not guarantee it.

Resolution:

This is a low-level code, so while confirming it's shipped on the power management controller of some larger product through firmware analysis would be ideal I'll accept weaker proof such as someone in Github issues saying "we use it in X" and X being possible to buy before the close date.

The project founders seem motivated. If Oxide goes out of business it's quite possible wherever they go next will use Hubris. That scenario will resolve N/A - the spirit of the question is predicting whether the RTOS will go from 1 to N.

Sufficient levels of project death (e.g. no new in-network commits on any forks for a year) will resolve no.