Whatsmyserp - Powerful Rank & Serp Tracking. Completely Free.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
SEOmator - SEO website analysis & audit tool
Panguin Tool by Barracuda Digital - See your website's Google organic visit data overlaid with Google's major algorithm updates and changes to easily identify the impact on your website. Technology by Barracuda Digital.
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Sonatype Nexus Lifecycle - Sonatype Nexus Lifecycle is a software repository and composition analysis tool that helps developers and operations teams keep track of all the software components in their applications and systems.