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!

Google Opinion Rewards - Answer quick surveys and earn Google Play credits with Google Opinion Rewards.

Validately - Validately is a user feedback platform to test demand and usability on a clickable prototype or live feature.

Receipt Hog - A fun and rewarding way to turn everyday shopping receipts into cash.

UserZoom - Test, measure, and monitor UX with our cost-effective all-in-one platform. UserZoom is a cloud-based solution for online usability testing.

FreeMyApps - FreeMyApps lets you get rewarded for watching cool videos, playing fun games, and trying new apps.