NoCapture is privacy software that blocks sensitive windows and information from being captured during screen sharing or streaming. Operating at the OS API level, it prevents capture methods like DXGI, BitBlt, and DWM duplication, offering protection beyond app-layer solutions. Users can cloak specific windows while keeping others visible, ensuring workflow continuity. A live preview pane shows what remote software like Zoom or OBS will capture, preventing exposure. Features include title masking to block AI scrapers, Alt+Tab and taskbar skip to hide cloaked apps, and ghost mode to render protected windows transparent or outline-only. Pin-on-top keeps reference documents visible to the user but invisible to capture tools. Notification shields suppress alerts during presentations, while global hotkeys and smart routines enhance usability. Operating offline with minimal system overhead, NoCapture ensures privacy without compromising performance.