TestRail’s web-based test case management is used by thousands of great QA and Development teams to efficiently organize, track and manage software testing.
UserTesting.com - Usability testing has never been easier. Get videos of real people speaking their thoughts as they use websites, mobile apps, prototypes and more!
PractiTest - PractiTest is a cloud based Innovative test management tool.
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Userbrain - Easy, fast, and affordable user testing for websites and prototypes.
TestLink - Test & requirements management