If you need a foundation for real-time animation and interactivity in website and app UI elements, Rive is worth a look. Rive is an interactive motion graphics tool that lets you create graphics with deep interactivity and animation. It's got features like State Machine for visual interactivity, Animate Anything for fast and performant real-time animation, and Rive Runtimes for loading and controlling graphics on different platforms. It's adaptable enough to be used for game UI, hero animations, interactive elements, and more, so it's a good option for improving the look and feel of your web and mobile apps.
Another powerful option is FlutterFlow, a web-based tool that lets you build modern apps with Firebase integration, API support, animations and a visual drag-and-drop interface. FlutterFlow has a UI builder with a lot of Flutter widgets and prebuilt elements, a custom code editor and tools for real-time collaboration. It can handle responsive app design and publishing to different platforms, so it's good for small projects and big teams.
If you want to use AI to help with design and rapid prototyping, Magic Patterns offers a tool to generate UI components with AI. You can generate new UI elements from prompts or images and export projects as React or Figma. It's geared for individual designers and developers who want to speed up their frontend work with community-created UI components and lots of customization options.