SideSnip by ShadabDSW

SideSnip keeps the text you type again and again (answers, links, email replies) and files such as your resume in a small frosted-glass panel at the side of your browser. Click a snippet to copy it, insert it into the field you're typing in, or attach a file to an upload field. Sort snippets into groups and search them all at once. SideSnip stays off until you turn it on for a site, and everything stays in your browser.