Most Web sites changes frequently, and it's sometimes useful to know what these changes consist of. SiteDelta is an extension for Firefox that can identify changes made to a Web page since your last visit and even tell you what the previous version of the page said.
Like most Firefox extensions, SiteDelta requires a browser restart to finish installation. Once installed, the extension appeared as a delta symbol (a triangle) in Firefox's status bar. Click the icon and the extension will scan the page; come back later, click it again, and SiteDelta will highlight all changes that have … Read more