GoodUI is a platform dedicated to enhancing user interface design through evidence-based insights and experimentation. The website, found at https://goodui.org/, offers a collection of hypotheses, patterns, and data-backed suggestions that aim to improve interface usability and conversion rates. GoodUI encourages designers and teams to test their ideas and learn from real-world results, fostering an iterative approach to UI design. The platform is a valuable resource for professionals looking to optimize their design strategies through proven methodologies.