For Penpot alternatives, move a real UI flow rather than a single frame.
- Import components, variants, typography, grids, and reusable tokens.
- Edit a shared component and inspect changes across screens.
- Test comments, permissions, prototyping, and developer inspection.
- Export assets and an editable project; check visual and structural fidelity.
- Ask a designer and developer to complete one handoff together.
A tool can reproduce screenshots while flattening the design system. Reusability and handoff should be explicit acceptance criteria.