Startuplister - Startuplister helps you generate traffic and exposure by manually submitting your startup to...

Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.

Startup Checklist - The best startup marketing tools and resources collected in one place.

Screpy - Screpy is a web analysis tool that can analyze all pages of your websites in one dashboard and monitor them with your team. It's powered by Lighthouse and it also includes some different analysis tools (SEO, SERP, W3C, Uptime, etc).

PublicizeTo - Single place to submit your startup to get feedback and gain customers.

SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.