jcgHardware for surveillance?
It's not the cheapest, but I have had very good luck with Synology. Works with almost every camera on the market, including everything that supports ONVIF or RTSP. Good client software for web, desktop, and mobile. Has tons of tweaks and features.
Synology make cameras?
Yeah they make a few cameras. They also work with a great many models (thousands of models) by other manufacturers.