Penpot is an open-source design and prototyping platform built entirely on open web standards (SVG, CSS, HTML) rather than a proprietary file format, letting designers and developers work from the same underlying code. It offers a Figma-like interface with components, Flex/Grid layout systems, real-time collaboration, and an Inspect tab that generates clean, usable CSS directly from designs. Available as a free-tier SaaS product or fully self-hosted via Docker and Kubernetes, Penpot appeals to teams wanting design tool parity with Figma without per-seat licensing fees, proprietary lock-in, or having design files trapped outside their own infrastructure.