Sitebeam - Spelling mistakes, SEO, load speed, social media, code, W3C, accessibility & more in one tool.
Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.
Maxymiser - The most powerful solution for optimizing the online customer experience with testing, insights and personalization.
RankScience - Advanced Content Optimization Software for SEO
Reactful - Reactful is a real-time website optimization platform that triggers reactions to visitor intent to turn more ‘maybes’ into engaged prospects and customers.
SISTRIX - SISTRIX toolbox is an SEO tool for professionals helping reputable companies to constantly improve their websites.