I have Evohome connected to the raspberry pi Domo - Works Great despite having to have a script to continually restart domoticz process (Why does it crash sooooo much) Hikvision cams connected, although not really seen any benefit to connecting them tbh... Texecom Premier Elite Alarm yet to be ...

I run it with the Internet gateway works a treat and it's the only automation product my missus actually understands and enjoys using