Firebug is a handy Firefox extension that allows you to monitor, edit and debug your live websites. The freeware has several features, including a line-by-line code inspector, error console, and command line. It can find issues in HTML, CSS, JavaScript and XML.
Firebug includes an icon in the Firefox status bar that alerts you to coding errors in real time. You can tell Firebug which websites to monitor and access the site code live at the bottom of your browser or in a separate window.
This powerful tool lets you easily monitor network activity, explore and edit DOM objects, log and execute JavaScript in progress, visualize CSS errors and even manage cookies.
Optimize Your Online Work Experience With Google
Check and update Facebook on your BlackBerry 10 phone