You've also got changedetection.io ->(https://lemonade.changedetection.io/start https://lemonade.changedetection.io/start), which can be selfhosted on a pi etc.

You've also got changedetection.io ->(https://lemonade.changedetection.io/start https://lemonade.changedetection.io/start), which can be selfhosted on a pi etc. I've used it myself to snipe the cheapest kimsufi server.