Penpot Overview
Penpot is a free, open-source design and prototyping platform for Windows, macOS, and Linux (and self-hosting), positioned as an open alternative to proprietary design tools. It runs in the browser and is notable for being built on open web standards, storing designs in formats based on open standards like SVG, which keeps work portable and developer-friendly. Penpot supports interface design and prototyping in one place: you create layouts with vector tools, components, and shared libraries, then connect screens into interactive prototypes to demonstrate flows. Because it is designed for collaboration, teams can work together on the same files, and developers benefit from a built-in inspect mode that exposes code and measurements. Being open source, Penpot can be self-hosted for full control over data, and it is free to use on its hosted service. This page links to the official Penpot source.