I use firefox more than chrome because of this extension

I like it very much. As many others say, it would be nice to be able to set a shorter than 5 minute refresh time when you have system resources to spare and want to be first to a site change. It integrates with Notification Sound (another Firefox add-on) so that it plays a sound, and you can choose a nicer one from C:\Windows\Media. It would be cool if it would also send notification emails, or integrate with a future "Notification Emails" (which does NOT exist) since the site I am following is updated at midnight and my PC is a long way from my bed. It does not let us choose a part of a page so pages that have changing adverts are fraught. Fortunately that does not apply to me. All in all, a very nice extension which provides functionality that you would have to pay for from update notification website services. Thank you Sneaky Pete.

I have been using it more than five years almost daily with no problem at all.

Excelente!!

Helps me reliably to track changes of important web sites.

Works like a charm!

Great plugin, much appreciated!

This is amazing! Works just as well as Visualping in my experience. Thanks.

JA TESTEI VARIOS
ESSE E O MELHOR!!!!
ERA BOM SE ESTIVESSE PARA ANDROID

This is my favorite regarding page monitors. Unlike visualping and co. it has no limits and runs on your machine.