Does the Reolink E1 Pro work with HomeKit, Alexa, and Google Home?
The E1 Pro serves RTSP and ONVIF on its own, with no hub or recorder.
It is a 5MP indoor Wi-Fi camera on DC power, and it has no PoE. It suits Google Home and Alexa users, with native support through the maker's cloud. Home Assistant users get native support through local Wi-Fi control. It does not support HomeKit.
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.