Freemium
Penpot
Open SourceDesign Tools · Design & Prototyping
Open-source design and prototyping platform, SVG-native.
designopen-sourceself-hostedprototyping
Discover the 9 best open-source tools for design & prototyping. Community-driven, transparent source code with permissive licenses. Curated, compared, and updated for developers.
| Tool | Pricing | Platforms | Top Strength | Link |
|---|---|---|---|---|
| Penpot | freemium | web | Open-source design and prototyping platform, SVG-native. | Details → |
| Excalidraw | free | web | Hand-drawn style virtual whiteboard, ideal for quick diagrams. | Details → |
| tldraw | freemium | web | Beautiful open-source infinite canvas SDK and whiteboard. | Details → |
| Primer | free | web | GitHub's design system with React components and tokens. | Details → |
| Carbon | free | web | IBM's open-source design system for products and experiences. | Details → |
| Inkscape | free | desktop | Free, open-source professional vector graphics editor. | Details → |
| DiceBear | free | Web | Avatar generator with 30+ styles — deterministic avatars from any seed via library, API or playground. | Details → |
| Google Fonts | free | Web | The free web font library — 1,800+ open-source families with variable fonts and easy embed. | Details → |
| Fontsource | free | Web | Self-host open-source fonts as npm packages — versioned, offline-friendly and dependency-pinned. | Details → |
Design Tools · Design & Prototyping
Open-source design and prototyping platform, SVG-native.
Whiteboards & Diagrams · Design & Prototyping
Hand-drawn style virtual whiteboard, ideal for quick diagrams.
Whiteboards & Diagrams · Design & Prototyping
Beautiful open-source infinite canvas SDK and whiteboard.
Design Systems · Design & Prototyping
GitHub's design system with React components and tokens.
Design Systems · Design & Prototyping
IBM's open-source design system for products and experiences.
Design Tools · Design & Prototyping
Free, open-source professional vector graphics editor.
Illustrations & Assets · Design & Prototyping
Avatar generator with 30+ styles — deterministic avatars from any seed via library, API or playground.
Typography & Fonts · Design & Prototyping
The free web font library — 1,800+ open-source families with variable fonts and easy embed.
Typography & Fonts · Design & Prototyping
Self-host open-source fonts as npm packages — versioned, offline-friendly and dependency-pinned.