mabl - Low-code Test Automation That Scales
Loader.io - Loader.io is a simple cloud-based load testing service
testRigor - Use plain English to build stable and maintainable functional end-to-end tests.
WebLOAD - WebLOAD - The most flexible and cost effective software for enterprise load, stress and performance testing, integrated with DevOps processes. Click for details
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.