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!
Topcoder - The Topcoder home page has received a slick new makeover that lets new customers quckly login, discover the power of our community, and launch challenges.
UserZoom - Test, measure, and monitor UX with our cost-effective all-in-one platform. UserZoom is a cloud-based solution for online usability testing.
vayuz - Our love for internet is unquestionable, relentless and our logics are governed by the “School of Open Source”.
Validately - Validately is a user feedback platform to test demand and usability on a clickable prototype or live feature.
AppToolTester - AppToolTester offers advice and review for app builders such as GoodBarber, AppyPie, and AppMakr.