HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
No-IP - Dynamic DNS and Managed DNS Provider
Intruder - Intruder is a security monitoring platform for internet-facing systems.
Duck DNS - Free dynamic DNS hosted on Amazon VPC
Forcepoint Web Security Suite - Internet Security
FreeDNS by Afraid.org - Free DNS hosting, lets you fully manage your own domain. Dynamic DNS and Static DNS services available. You may also create hosts off other domains that we host upon the domain owners consent, we have several domains to choose from!