ff3sudoku is an add-on that features an engine for playing Sudoku puzzles. It can generate random puzzles, but it also detects and imports Sudokus from several Web sites, including websudoku.com, sudokupuzz.com, sudoku.com.au, and others. There is also a stand-alone version working in Firefox 3+ and GoogleChrome.
iMacros for Chrome is an extension that allows you to automate repetitive tasks like visiting the same sites every day, filling out forms, and remembering passwords. It can automatically fill Web forms that stretch over several pages. It can automate the download and upload of images, files, or entire pages (with or without images). iMacros includes a user agent switcher, functions to download PDF and Flash, and ad-blocking and image-blocking functions. iMacros can automatically read data from a Web site and export it to CSV files. You can use this feature to download stock quotes, gather and compare Web store prices, and more. Web professionals can use iMacros for functional, performance, and regression testing of Web applications.
After the Deadline checks English spelling, misused words, style, and grammar using artificial intelligence and natural language processing. This add-on adds After the Deadline's smart technology to the Firefox browser. Now you can check grammar in your online word processor, spell check your Web mail, and send tweets with confidence.
FirefoxSync for DolphinHD is a plugin for DolphinHD to keep information such as passwords, bookmarks, tabs, and history synchronized between you desktop Web browser and you mobile Web browser by using Mozilla Weave/Firefox Sync. It lets you access open tabs from the desktop on Dolphin and the other way around. It is not produced by the Mozilla Foundation.