Question: I need a web-based solution for creating interactive designs and animations without requiring any downloads or installations.

If you're looking for a web-based tool to create interactive designs and animations without any downloads or installations, LottieFiles is a great option. It includes a web-based Lottie Creator tool to create customizable animations, letting you create, edit, test and collaborate on lightweight, high-quality, interactive animations. The service also includes no-code testing and optimization for different platforms, making it a good option for boosting user engagement and accelerating your design workflow.

Another option is Animaker, an AI-based platform for creating animated and live-action videos. It includes a large library of assets, video templates and advanced video editing tools, so anyone can quickly create engaging videos. Whether you're looking for animations for training, onboarding or marketing, Animaker is a good option with a free-forever option and other tools for more advanced features.

For interactive motion graphics, Rive is a powerful option with its State Machine for creating interactivity, Animate Anything for real-time animation, and a range of tools for designing and controlling interactive graphics. Rive can be used for everything from game UI to hero animations, and it offers a range of pricing options to accommodate different needs.

You could also look at Modyfi, an all-in-one design platform that combines tools for creating, animating and editing visual content. It includes features like Motion for turning designs into animations, Next Gen Editing with AI-driven art direction, and project management collaboration. Modyfi is built with WebGPU for fast image processing and includes a range of real-time editable modifiers, making it a powerful option for interactive design.