GreenSignal

About

GreenSignal provides a swift confidence check before each video call. It evaluates your camera, microphone, speakers, room noise, and network connection. Rather than displaying a complex diagnostics panel, it delivers a straightforward result: either you are ready to proceed or it identifies the single issue to resolve. All operations occur locally on your device. The service requires no accounts, avoids any tracking, uses no cloud processing, and never records audio or video. It is available free for both macOS and Windows.