Firefox Addon Websites
HTML / HTML5 / XHTML / WCAG / Section 508 / CSS / Links / Spelling
Total Validator is an HTML validator, an accessibility validator, a CSS validator, a spell checker, and a broken links checker all rolled into one tool allowing one-click...
614,073 
$ 3,200.00
EPUBReader - Read ePub just in Firefox
EPUBReader's Home. Read ePub-files just in Firefox.
348,894 $ 38,880.00
Undo Closed Tabs Button :: InBasic.NET
allows you to undo closed tabs via a toolbar button and/or tab bar button.
6,435,431 $ 24.95
Ciuvo
Ciuvo is a Browser Add-On that shows you the cheapest price, reviews and videos of products you are browsing online.
1,086,646 $ 1,920.00
