ComparisonGhostDesk vs Superlay AI: The Better Windows Overlay
If you are evaluating Superlay AI alternatives for Windows, the key question is whether the tool's invisibility actually holds up when you share your entire desktop — not just a browser tab. GhostDesk solves this at the operating system level using SetWindowDisplayAffinity, an API that tells the Windows Desktop Window Manager to exclude the overlay window from every capture pipeline before any pixels are rendered.
The result: GhostDesk is completely absent from Zoom, Teams, Google Meet, OBS, and Windows Game Bar captures — even when sharing your full desktop. It floats above VS Code, terminals, spreadsheets, and any other Windows application you use throughout your day.
Why OS-Level Invisibility Matters
Most AI overlay tools, including browser-based and generic overlay approaches, rely on window-level tricks: rendering on a transparent layer or blocking certain screenshot APIs. These methods can fail in unpredictable situations — when a modal takes focus, when a recording tool bypasses the standard capture route, or when sharing your full screen instead of a single window.
GhostDesk uses SetWindowDisplayAffinity(WDA_EXCLUDEFROMCAPTURE), which flags the window directly in the Windows Desktop Window Manager. The DWM renders the window normally on your physical display but omits it entirely from the capture buffer. There is no workaround — the invisibility is enforced at the kernel display subsystem level, not the application layer.
Built for Daily Productivity, Not Just Interviews
Many AI overlays target a single use case: helping in interviews. GhostDesk is different. It is engineered for your entire working day — helping you write code, debug issues, draft responses, understand documentation, and navigate complex problems across every application you use.
Voice input (Deepgram Nova-3 at ~300ms latency) and automatic screen OCR mean you never need to break flow by copy-pasting context into a chat window. GhostDesk reads your screen and listens when you speak — so your AI assistance is always one shortcut away, invisibly layered over your actual work.