Thumbstrips - View or Search Your Web Browser History in a Picture Timeline

Thumbstrips is a wonderful Firefox extension that helps you view recently visited web pages in a visual manner - it's a more user friendly and powerful approach than the native Firefox History view (Ctrl+H).

Thumbstrips, like an automatic screen capture program, takes screenshots of the websites that you are visiting and also records other details like how long you stayed on that web page and the number of times you viewed that page in your current session.
Thumbstrips Extension[Firefox Only]
Source: Digital Inspiration