Figma

Cloud-based interface design and prototyping tool: enables real-time, cross-platform collaboration for design teams and developers.

Figma centralizes the design process with its powerful, browser-based vector editor and live collaboration engine. It offers core features like Auto Layout for responsive design, reusable Components for building scalable design systems, and advanced Prototyping tools (including Smart Animate) for creating high-fidelity, interactive user flows. This platform unifies design, prototyping, and developer handoff—eliminating file versioning issues and streamlining the entire product development lifecycle for millions of users globally.

https://www.figma.com/