Software for online monitoring and tracking site changes?

Question

Monitoring

Good day.
I am looking for software for online monitoring of changes in information on the pages of the site.
It is necessary to track some blocks of the page, get information from them and it is desirable to process it, compare values, and so on.
I found a suitable plugin https://distill.io , you need similar software only with wider functionality.
Perhaps there are other similar plugins or is it already a separate software for any OS?

Answer 1

Zabbix with its web scripts. The flexibility of use is only limited by your imagination.