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VisualPing is a simple service for monitoring websites for changes. You'll recieve a notification when it detects any change in the content of the page. You can use it for price tracking, ticket & product availability checks, competition monitoring, or just to check your facebook-likes, twitter followers etc...

Obvious.io is a visual monitoring service for websites. Obvious.io uses computer vision to 'see' your website in the same way your customers do.

Awareness is essential to success, but being aware at scale is hard. Especially in an age of rich infographics and process generated media. Leverage the diff.io API to make awareness at scale easy. Track any page, at any frequency.