Appsero - Appsero is a killer WordPress Analytics, Licensing & Deployment Tool. Appsero is the perfect companion for WordPress plugin & theme developers.
Free SEO Checker by Spotibo - An SEO checker that analyses based on Google's algorithm 👀
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
How Much To Rank - Google ranking cost calculator
SEO Minion - Chrome extension & Firefox add-on to help you with SEO
Meta Tags - Meta Tags is a tool to debug and generate meta tag code for any website.