HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
iperf - A TCP, UDP, and SCTP network bandwidth measurement tool
Intruder - Intruder is a security monitoring platform for internet-facing systems.
JPerf - This project gives a better UI and new functionalities to the initial JPerf 1.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
NetStress - NetStress is a user-friendly benchmarking tool that is mostly used by networking professionals to measure the network performance of both wired and wireless connections.