monitor website changes - SERP Analysis

https://visualping.io/

https://www.reddit.com/r/selfhosted/comments/1eclgyy/need_help_finding_a_free_tool_to_monitor_specific/

https://distill.io/

https://sken.io/

https://changetower.com/

https://github.com/dgtlmoon/changedetection.io

https://chromewebstore.google.com/detail/visualping/pemhgklkefakciniebenbfclihhmmfcd%3Fhl%3Den

https://www.wachete.com/

https://versionista.com/

https://play.google.com/store/apps/details%3Fid%3Dme.webalert%26hl%3Den_US