Postman - The Collaboration Platform for API Development
Kualitatem - Kualitatem is an agile, business-focused global technology consultants offering Independent Software Quality Assurance Testing and Information Security Auditing services.
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Testlio - Testlio is a community of expert testers that help companies release their apps with highest confidence
TestComplete - TestComplete Desktop, Web, and Mobile helps you create repeatable and accurate automated tests across multiple devices, platforms, and environments easily and quickly.
TestRail - TestRail provides comprehensive test case management for software testing. Organize your testing, boost productivity, get real-time insights, and track progress toward milestones. Integrates with leading issue tracking and test automation tools.