Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Intruder - Intruder is a security monitoring platform for internet-facing systems.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.