All [Unix like systems](https://en.wikipedia.org/wiki/Unix) with either [X11](https://en.wikipedia.org/wiki/X_Window_System) or [Wayland](https://en.wikipedia.org/wiki/Wayland_(protocol)) are well supported since ever.
Over the years it was, like most of the [KDE applications](https://apps.kde.org/), ported to various [BSD](https://en.wikipedia.org/wiki/Berkeley_Software_Distribution) variants.
Be it some mainstream Linux distribution like [Fedora](https://fedoraproject.org/) or a niche one like [NixOS](http://nixos.org), Kate is available as binary package.
Since several years there are activities in the KDE community to provide our libraries and applications for Windows.
Even if that is a non-free platform, we can reach out to new users and developers that might later be then even interested to switch a full open platform.
Progress is slow, but steady.
We have some applications in the official Windows Store (including Kate) and nightly build for more of them.
With reasonable effort you can develop Kate on Windows with Craft.
Below the current state of the master branch running on Windows 11 inside VirtualBox.
One recent topic that needs love is the removal of DBus for Windows/macOS/Android and other systems that don't use that normally.
If you are up to help with that, [here](https://invent.kde.org/packaging/craft-blueprints-kde/-/issues/17) that is coordinated.
Just don't get that wrong, DBus is great on the Linux or BSD systems that use it natively, but it is a pain on systems that have no notion of DBus and leads there to hangs or the spawning of unwanted processes.