UserTest.io
UserTesting.com
Userbrain
userinput.io
Marvel
Userfeel.com
UserBob
UsabilityTools
Retest
browserling
Ghost Inspector
Maze Templates
Comparium
Userfeel.com
Preely
Peek by UserTesting
Retest allows you to check your incredible design, user experience, program flow, functionality, and page layout in 2 simple steps, on multiple mobile devices, tablets, and computers, without even buying any of those, so that every time your customer visits your webpage, they feel what you want them to feel with your design irrespective of their device.
We certainly respect the data privacy and security of all the webpages out there, and in no way, we intend to bypass that, so websites other than yours with any such added security features will not work on our platform.
P.S:- This is to test your website and not sneak into others
UserTest.io RetestUserTesting.com - Usability testing has never been easier. Get videos of real people speaking their thoughts as they use websites, mobile apps, prototypes and more!
browserling - Live interactive cross-browser testing from your browser.
Userbrain - Easy, fast, and affordable user testing for websites and prototypes.
Ghost Inspector - Easily create automated browser tests for your websites and web apps. Ensure everything works and looks the way it should. No coding required. 14 day free trial!
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
Maze Templates - A library of pre-made user tests and surveys