JMeter - Official Twitter account of JMeter, the open source load testing tool by @TheAsf. Code: https://t.co/ADK2A8Pl14. Website: https://t.co/oc0MW2ksea
Apache JMeter - Apache JMeter™.
SMARTBEAR ReadyAPI - SMARTBEAR ReadyAPI is one of the legit and professional automated testing API platforms that allows teams to create and run automated security tests for APIs and SOAP APIs.
Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
Tricentis NeoLoad - Tricentis NeoLoad is an Enterprise Performance Load Testing platform that provides hardware-based performance simulations and can simulate web services, databases, file servers, and virtualized environments.
locust - An open source load testing tool written in Python.