ThumbStrips is a Firefox extension that creates a filmstrip of thumbnails -- ThumbStrip, get it? -- so you can see your history, and stop guessing at page names in the history sidebar. After you install it, a small icon will appear in your browser's toolbar. Click the icon to view your ThumbStrips at the bottom of the screen.
ThumbStrips features include:
> Toolbar with full scroll/record controls
> Search across tabs and through all page content
> Edit & save sets of pages to return to later
* ThumbStrips does not collect any usage data or spy on user browsing habits.