AutoCopy

This one-hit wonder of a Firefox extensions nevertheless provides a useful feature for those who do a lot of cutting and pasting from Web pages into text fields or documents. AutoCopy copies any text you highlight to the clipboard--it's that simple.

It does do a bit more than that, though. The extension's Options menu lets users configure highlight behavior, post-copy pasting behavior, keyboard shortcuts, toggling a Status Bar button, and a menu that pops up after copying. From that pop-up menu, you can automatically paste the selected text into the location bar, the search bar, a new tab, access previous clipboards, or undo the copy.

AutoCopy's only flaw is that it occasionally conflicts with other extensions, but overall it's a simple, effective, must-have tool for those who copy text from a Web site to anywhere else on their computer and wants to speed up those tedious copy-and-paste tasks.