Windows driver · C++
DesktopSplitter
Split one physical monitor into 2–4 virtual monitors that Windows treats as real displays.
DesktopSplitter lets Windows treat parts of one monitor as separate displays — useful for window snapping, full-screen apps, or streaming one region of an ultrawide.
It works at driver level. An Indirect Display (IddCx) driver creates virtual monitors, so Windows, games and capture software all see them as real displays. A Direct3D compositor then draws those virtual monitors back onto the physical monitor at a high refresh rate.
It’s still in development — the installer isn’t published yet.