Google is behind two of the most well-known operating systems — Chrome OS and Android.

But it's an open secret that the search giant has been working on a third OS, which goes by "Fuchsia."

Here's what we know.

Google first acknowledged the existence of Fuchsia in May 2017, when Android VP of engineering Dave Burke called it an "early-stage experimental project."

What's giving it the status of OS is its recent development, which allowed some people to run the code on Google's own Pixelbook and launch a working system. IT worker Mitch Blevins has a YouTube channel where he's uploaded a series of videos in which he shows some of the features of Fuchsia.

And in January 2018, ArsTechnica's Ron Amadeo managed to do the same, and we now have some clear images that give us a flavor of what Fuchsia might end up being if Google ever brings it to devices.

What really differentiates Fuchsia from Chrome OS and Android is its core, which is not based on Linux but on a new kernel called Zircon. What this means is that Fuchsia has been developed as a system intended to work on a several platforms, not just phones and laptops.

Here's what it looks like: