Sitebeam - Spelling mistakes, SEO, load speed, social media, code, W3C, accessibility & more in one tool.
Ahrefs - Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!
Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.
Google Search Console - Google Webmaster Tools provides you with detailed reports about your pages' visibility on...
RankScience - Advanced Content Optimization Software for SEO
Bing Webmaster Tools - Drive more visitors to your site using Bing data on search queries, crawling and search traffic.