VIZEN

VIZEN is a free, open-source Windows application that lets you create live overlays from any window or screen region, positioning them over games or other windows. Features include smart notes, smart drawing, a per-app audio mixer, browser tab integration via a connector extension, and clean outputs for streaming in OBS. It focuses on multitasking during gaming or streaming, is game-safe by design with no memory injection, and requires no accounts or tracking.