Sitebeam - Spelling mistakes, SEO, load speed, social media, code, W3C, accessibility & more in one tool.
Siteimprove - Consider the Siteimprove Intelligence Platform the newest member of your team.
Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.
Monsido - Monsido is an all-in-one platform that delivers the insights you need to build a better web experience for your visitors
RankScience - Advanced Content Optimization Software for SEO
Templafy - Document assembly & management software