UXtweak is described as 'is online user testing and usability platform where you can conduct qualitative UX study as your users complete specific tasks, directly on your live web'. There are more than 25 alternatives to UXtweak for a variety of platforms, including Online / Web-based, Mac, Windows, iPhone and iPad. The best alternative is Teston. It's not free, so if you're looking for a free alternative, you could try Smartlook or Hotjar. Other great apps like UXtweak are UserTesting.com (Paid), FullStory (Paid), Usability Testing Exchange (Free) and Userbrain (Paid).
Teston helps companies to create better digital products by providing a powerful yet easy-to-use service that connects them to local testers around the world. Teston stands out among the alternatives thanks to the following:
Submit your website/app to Usability Testing Exchange (UTX), then some people will do Usability Testing of it, and send you thoughts and feedback. Instead of paying, you help someone else, in exchange.
Userbrain is a remote usability testing service with focus on continuous testing. You can order and watch videos of real people interacting with your website. You will hear what users think and see what they do.
Discount remote user testing service. The most affordable way to get unbiased feedback from users as they use your website. Ask users to perform certain tasks on your site while they record their screen and voice. Pick users from your site's demographics.