Eyequant - We’ve built an artificial intelligence that instantly predicts how users will see your website so that you can create landing pages that sell
ProjectHuddle - Get design feedback and client approval using WordPress.
Attention Insight - Maximize advertising campaign results and design performance with pre-launch analytics.
Invision - Prototyping and collaboration for design teams
Heurix.io - Heurix is a free heuristic evaluation tool that helps you work out how to improve your website.
Savahapp - The all-in-one design sharing, collaboration, workflow and app prototyping platform