Postman - The Collaboration Platform for API Development
TrackDuck - Visual feedback for web design and development.
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Valist - Automatically created staging environments for every update with a shareable link for testing
TestComplete - TestComplete Desktop, Web, and Mobile helps you create repeatable and accurate automated tests across multiple devices, platforms, and environments easily and quickly.
Usersnap - Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.