Asodesk - One solution to grow your app business
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
Where is My Website - Highlight your site in Google and keep eye on Competitors
Serpstat Website SEO Checker - Check your website's SEO, analyze competitors and keywords
OnCrawl SEO Chrome extension - Quickly but deeply audit your onsite SEO performances.
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.