HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.

Zercurity - Monitor your infrastructure for policy non-compliance, live

Bugcrowd - Harness the largest pool of curated and ranked security researchers to run the most efficient bug bounty and penetration tests

Serpstat - Serpstat is the Swiss army knife for automating SEO processes. With a suite of powerful modules, you can track your performance, analyze your competitors, research keywords and backlinks, audit your website, and so much more.

Bugbase - Pest Control Management

SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters