Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
Boss - Github, now with bounties
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.
Bugcrowd - Harness the largest pool of curated and ranked security researchers to run the most efficient bug bounty and penetration tests
OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...
Bounties Network - Complete tasks, earn crypto