Firefox Extension for web developers/designers as well as casual users "As you glide the mouse over the page, you will see a red rectangle framing each element under the cursor."
Firefox Extension, simple tool that allows you to highlight all instances (within a webpage) of a word, several words, or a phrase that you currently have selected. Right click anywhere on the page and choose "Clear Highlighting" to reset the page.
Firefox Extension that inserts [quote] tags around the clipboard contents and inserts them into any text field from the context menu. It's only real use is when you are posting to a forum and wish to make it clear that you are quoting a passage of text.
provides a very easy way to lookup (or translate) a word in a Web page or an email in an online dictionary such as thefreedictionary.com. Simply select the word you want to lookup. Then right click and select "Dictionary Search for ...".