Apache JMeter - Apache JMeter™.
OctoPerf - OctoPerf is a SaaS load testing solution, based on JMeter.
Loadrunner - Discover how HP performance, stress, and load testing software LoadRunner can prevent costly...
TestRail - TestRail provides comprehensive test case management for software testing. Organize your testing, boost productivity, get real-time insights, and track progress toward milestones. Integrates with leading issue tracking and test automation tools.
locust - An open source load testing tool written in Python.
LoadComplete - The only load testing tool to record, replay, and test in real browsers at scale.