Add-ons that I use for keyword research, site analysis and competitive analysis in search engine optimization.
Seoquake is a Firefox SEO extension aimed primarily at helping web masters who deal with search engine optimization (SEO), social media optimization (SMO) and internet promotion. Seoquake allows to investigate many important SEO parameters.
Just a simple extension to highlight links in a page according to nofollow / dofollow status.
Automatically find user scripts on Userscripts.org (requires Greasemonkey or Scriptish)
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