Domain penalty checkers

Barracuda Panguin Tool - it's a free SEO tool to help you investigate whether you’ve been impacted by Google’s algori

RDS Bar is a free extension for Google chrome and Mozila browsers to quickly analyse your website's main SEO indicato

PR-CY is an online service that allows you to check a website for a large number of SEO parameters.

Pixel Tools is a suite of useful tools for the SEO optimiser from Pixel Plus.