
locust
An open source load testing tool written in Python.
15 Alternatives To locust
Apache JMeter
Apache JMeter™.

Blazemeter
BlazeMeter is a self- service performance load testing cloud tool

Load Impact
How many users can my web site handle?
Loader
Load testing and tracking application

Loadrunner
Discover how HP performance, stress, and load testing software LoadRunner can prevent costly…

Sauce Labs
Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
StresStimulus
Load testing tool for websites and mobile that works with hard-to-test applications.
Taurus
Automation-friendly framework for Continuous Testing.
WAPT
Load, Stress and Performance Testing for Websites and Web Applications

XRebel
XRebel is a lightweight Java profiler that helps developers find and fix common problems in their application as they code.
gatling
A high performance web server. Small! (125k static Linux-x86 binary with HTTP, FTP and SMB support).
gatling
A high performance web server. Small! (125k static Linux-x86 binary with HTTP, FTP and SMB support).

k6 Cloud
Managed load testing service built on top of the popular open-source project k6.