Web service and Chrome extension to monitor website and receive alerts upon changes.
Ranked in these QuestionsQuestion Ranking
Pro Has a free tier
Can monitor 25 webpages for free. It is sufficient for daily use.
Pro Has advanced selectors of what to monitor
Pro Can watch pages behind logins and forms
Pro Option to run locally on computer and in cloud
Can use browser extension to check for changes locally. There is also an option to check webpages in cloud. Changing run device is configurable from both browser extension and cloud.
Pro Can monitor PDF documents for changes
Con Free tier is limited
Only 1 check per 6 hours could be done in cloud. However browser extension allows 5 seconds check interval for free.
Con Expensive for casual use
Con Settings persistence behind paywall
Chrome can synchronize settings but that option is only for paying members of Distill.