The Custom Buttons² Firefox extension provides the code base support necessary to create, maintain, import, and export custom toolbar buttons. These custom buttons can be written to do various tasks that the user may require.
Adds Prototype JavaScript Library reference to DevBoi
Adds HTML validation to the View Page Source of the browser. The validation is done by Tidy from W3c.
This extension pops up an alert dialog to warn chrome and extension developers about one particular type of leak. It warns when windows close but leave other code pointing at their JavaScript objects.
An extension that lets you increment/decrement a portion of a location.
Extra protection for your Firefox: NoScript allows JavaScript, Java (and other plugins) only for trusted domains of your choice (e.g. your home-banking web site). This whitelist based pre-emptive blocking approach prevents exploitation of security vulnerabilities (known and even unknown!) with no loss of functionality... Experts will agree: Firefox is really safer with NoScript :-)
Resize HTML form fields, including textareas, select boxes, text fields, and iframes.
A full featured blog editor that integrates with your browser and lets you easily post to your blog.
Turns the stop and reload buttons into a single one. When you can stop, you have a Stop button, otherwise you have a Reload button. (Like Safari)
Treats selected plain text urls, and email addresses as links and adds options to the context menu on how to use these.