SISTRIX - SISTRIX toolbox is an SEO tool for professionals helping reputable companies to constantly improve their websites.
Sitebeam - Spelling mistakes, SEO, load speed, social media, code, W3C, accessibility & more in one tool.
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Condorly - Condorly offers conversion rate optimization and personalization services to turn most website visitors into qualified leads.
Page Weight - Find and fix heavy images on your website
Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.