-
changedetection.io
The best and simplest free open source web page change detection, website watcher, restock monitor and notification service. Restock Monitor, change detection. Designed for simplicity - Simply monitor which websites had a text change for free. Free Open source web page change detection, Website defacement monitoring, Price change notification
-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
https://github.com/dgtlmoon/changedetection.io sounds like it could work if you configured it to alert to some external system (it supports many). I tried it out but it's a little heavyweight for what I wanted. Kinda tricky to configure but it is very powerful.
I have something like this set up with RSS Bridge (https://github.com/RSS-Bridge/rss-bridge) creating private RSS feeds for what I'd like to follow. I then subscribe to those feeds in Fresh RSS (https://freshrss.org/)
I have something like this set up with RSS Bridge (https://github.com/RSS-Bridge/rss-bridge) creating private RSS feeds for what I'd like to follow. I then subscribe to those feeds in Fresh RSS (https://freshrss.org/)