Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.
SISTRIX - SISTRIX toolbox is an SEO tool for professionals helping reputable companies to constantly improve their websites.
Siteimprove - Consider the Siteimprove Intelligence Platform the newest member of your team.
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Koalati - Automated website testing and quality control tools for developers and agencies.
Page Weight - Find and fix heavy images on your website