SiteDelta
Firefox extension which will monitor changes on specified web pages.
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Firefox
What is SiteDelta?
SiteDelta is an Add-on for old versions of 
Mozilla Firefox (before the introduction of WebExtensions).
SiteDelta can scan for changes to a website since your last visit.
It adds a small Delta icon to your browser status bar. When you click onto it, it highlights all changed text contents of the current page (since the last time you clicked onto it). Clicking again cycles through the changes. Rightclick onto the icon provides access to other features offered by SiteDelta.
For current versions of Mozilla Firefox and 
Google Chrome, 
SiteDelta Watch is the official successor.
The extension are no longer updated. Last version, 0.13.2.1, released in March 2013, can be still downloaded from Mozilla Addons.
SiteDelta Screenshots
SiteDelta Features
SiteDelta information
Supported Languages
- English
Comments and Reviews
Tags
- webpage-monitoring
- Alerts
This is the program everyone is trying to find in this category. It is not only checking the full page but it gives you the choice to check for a specific change. You are avoiding stupid changes like a different ad in the page and you do that with 0 knowledge in HTML or any other programming language.