Boss - Github, now with bounties
HackenProof - The world trusted Bug Bounty Platform for crypto projects
Bugcrowd - Harness the largest pool of curated and ranked security researchers to run the most efficient bug bounty and penetration tests
Axonius - Cyber security asset management to see and secure all
Bounties Network - Complete tasks, earn crypto
PentestHero.io - Your pentest partner in the cloud