Postman - The Collaboration Platform for API Development
Cypress.io - Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.
WP Webhooks Pro - Do everything within WordPress without WordPress.
RainforestQA - Insanely simple testing. Create tests for your website in plain English, then run them across all major browsers with a single click. Powered by human intelligence
Treespec - Test your webapp by recording a video of your workflow
Parrot QA - Automate your bug testing without writing a line of code.