Okta - Enterprise-grade identity management for all your apps, users & devices
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
OneLogin - On-demand SSO, directory integration, user provisioning and more
Intruder - Intruder is a security monitoring platform for internet-facing systems.