History Search - History Search remembers what's on all those websites you visit so you can find them again.

Visualping - Visualping is the easiest to use website checker, webpage change monitoring, website change detector and website change alert software of the web. Read more about Visualping.

Better History - Your Chrome Browsing history. Better.

Distill Web Monitor - Distill is a web monitoring tool. It can monitor RSS feeds, a webpage or a part of webpage. Alerts in the form of pop-up, audio or emails can be received.

Microsoft Web Activities - Microsoft's new extension bringing timeline to Chrome

Update Scanner - Update Scanner is a Firefox extension to monitor web pages for updates.