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Design & ValidateToolOpen sourceFreemium
Penpot
A self-hostable open-source interface design and prototyping platform with components, design tokens, responsive layout, and live collaboration.
Visit official siteContent updated Jul 31, 2026Automated check reached the official site · Checked Aug 24, 2026
Why use it
Open file formats and web standards improve handoff while letting indie teams control design sources and deployment.
Where it fits
Use prototypes and playtests to find core experience problems while they are still cheap to fix.
ui-uxprototyping
What to check
General prototypes do not replace in-engine controller focus, font rendering, performance, or target-device testing.
