1. Zotero: a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources.
2. Read It Later: For the student with little time, or the student who prefers to read search for everything and then read it later — save the pages that you find interesting but do not have time to read completely for later.
3. MyStickies: “MyStickies allows you to place little yellow squares of digital paper anywhere and everywhere you feel like in the whole wide web. Along with the ability to put sticky notes on webpages, MyStickies offers a powerful interface to browse, search, sort, [and] edit.”
4. Dictionary Search: Highlight a word and get its definition without leaving your current webpage.
5. Adblock Plus: “Adblock Plus allows you to regain control of the internet and view the web the way you want to. The add-on is supported by over forty filter subscriptions in dozens of languages which automatically configure it for purposes ranging from removing online advertising to blocking all known malware domains.”
6. Morning Coffee: “This extension lets you organize websites by day and open them up simultaneously as part of your daily routine. This is really handy if you read sites that update on a regular schedule (like webcomics, weekly columns, etc.).”
7. StumbleUpon: “StumbleUpon helps you discover great websites that match your interests. Simply click the Stumble button and see the best websites. There are over 500 topics to choose from, and, the more you use it, the better your recommendations become!”
8. LeechBlock: “LeechBlock is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.” [Like..erm…#7?]
Search for more Firefox add-ons.