AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.
Collector's Note 自動翻頁，幾乎可以適用在所有網站。
Make any pages' search functionality available in the Search Bar (or "search box")...
Collector's Note 把所有網站的站內搜尋器都加入你的Firefox右上方搜尋列中
Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).
View publicly-accessible PDF, DOCX, PPTX, XLSX, among other files online with Google Docs by only 2 clicks. Click as usual for your default viewer. Support bookmarked URLs. Security and your explicit viewing intention are always honored.
Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.
Collector's Note 可以讓你解除firefox相容性限制，安裝舊版的擴充套件。
All your social networks in one easy to use app - it's the #1 downloaded social networking add-on for Firefox. Get all your updates, update your status and share across Facebook, Twitter, LinkedIn, YouTube & more - all at once!
Collector's Note 最好的整合社群套件。
Allows URI texts written in webpages to be loaded by double clicks.
Display all Google services as buttons or as a space-saving dropdown menu next to your address bar. Reach services like Gmail, Google reader, Google maps, Google calendar, and many more in a single click from your browser.
Collector's Note 把Google所有服務變成小按鈕或集合選單，讓你擺放到瀏覽器工具列上，方便切換。
Never lose anything you type into a web form again! Lazarus securely auto-saves all forms as you type, so after a crash, server timeout, or whatever, you can go back to the form, right click, "recover form", and breathe a sigh of relief.
Collector's Note 幫助你回復當機前輸入的表單文字。
Customize your bookmarks bar with Roomy Bookmarks Toolbar
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
Collector's Note 幫你監控某些不支援RSS的網頁更新，會自動提醒你。
Shows a full size image when you hover over thumbnails on popular websites like Facebook, Twitter or Amazon.
Contextual (inline) unit, timezone, and currency converter on any web site, plus custom conversions for offline text. Shopping assistant also included -- find the best deals online! (Currency conversions and shopping assistant disabled by default.)