Turn any monitor into a horizontally‐mirrored display you can actually work on — with a cursor that still moves the right way and clicks that land where you expect.

Most "screen flip" tools just capture your screen and redraw it backwards, which leaves you fighting a mirror‐image cursor. ScreenFlip solves the part everyone skips: it puts your real windows and the real pointer on a hidden workspace and shows that workspace flipped, full‐screen on your chosen monitor, drawing a matching cursor at the mirrored spot. Move the mouse and it behaves naturally; click and it hits exactly what you see.

Great for teleprompters / beam‐splitter glass, filming yourself at a screen the camera mirrors, and mirror / practice setups you still need to operate.

ScreenFlip before/after

Both editions share the same "Model B" architecture: a headless virtual workspace hosts your windows and the real cursor; it is captured and re‐drawn horizontally flipped on the physical monitor; a passive proxy cursor is painted at the mirrored position; and there is no input interception anywhere — clicks, drags and typing are all native. Display arrangement is saved on launch and restored on quit.

The big platform difference is the virtual display:

• macOS uses the private, driver‐free CGVirtualDisplay.
• Windows has no driver‐free equivalent, so the full experience uses an IddCx virtual‐display driver (an existing signed community one, or the bundled windows/driver); without one it falls back to a degraded "mirror another display" mode. See the Windows notes and windows/SPEC.md.

screenflip/
├── macos/ # macOS edition (Swift) — build.sh, Sources/, prebuilt build/
├── windows/ # Windows edition (C++) — build.bat, src/, driver/, SPEC.md
├── assets/ # shared marketing images
└── README.md # you are here

• macOS → macos/README.md — cd macos && ./build.sh
• Windows → windows/README.md — cd windows && build.bat

Questions, bug reports, or ideas? Email vladimir@vbar.io .

Provided as‐is, for personal use. No warranty.