Seashells : Seashells lets you pipe output from command-line programs to the web in real-time, even without installing any new software on your machine. You can u...
BackstopJS : BackstopJS automates visual regression testing of your responsive web UI by comparing DOM screenshots over time.
FirePHP : FirePHP enables you to log to your Firebug Console using a simple PHP method call.
All data is sent via response headers and will not interfere with t...
The Web Developer extension adds various web developer tools to a browser. The extension is available for Chrome, Firefox and Opera, and will run on any platform that these browsers support including Windows, OS X and Linux.