Design & Prototyping Tools

Best Design & Prototyping tools by public signals

These picks are computed from scored public evidence. Use the openness column in the ranking to separate OSI-approved, source-available, open-core, proprietary, and unverified-license tools.

Best overallStorybook98 score License-safe pickStorybookOSI-approved OSS Fastest shippingStorybook99 shipping

Use Case Rankings

Ordered by ToolVitals score, then health, shipping, confidence, GitHub stars, and name.

#	Tool	Health	Shipping	Openness	Stars	Score	Status
01	Storybook Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation	98	99	OSI-approved OSS	91.1k	98	Active
02	Penpot Open-source design and prototyping platform	98	98	OSI-approved OSS	59.9k	98	Active
03	Open Pencil AI-native design editor. Open-source Figma alternative.	97	97	OSI-approved OSS	8.3k	97	Active
04	Pascal Create and share 3D architectural projects.	97	96	OSI-approved OSS	23.9k	97	Active
05	OpenPencil Open-source AI-native vector design tool.	96	97	OSI-approved OSS	5.9k	97	Active
06	Presenton Open-Source AI Presentation Generator and API (Gamma, Beautiful AI, Decktopus Alternative)	95	97	OSI-approved OSS	10.2k	95	Active
07	Webstudio Open source website builder and Webflow alternative. Webstudio is an advanced visual builder that connects to any headless CMS, supports all CSS properties, and can be hosted anywhere, including with us.	95	95	OSI-approved OSS	8.9k	95	Active
08	Tixl TiXL is an open source software to create realtime motion graphics.	95	95	OSI-approved OSS	5.1k	95	Active
09	Ashim A Self Hosted Image Manipulator - 45+ tools, local AI, and pipelines in a single Docker container. No cloud, no telemetry. Your images never leave your machine.	94	95	OSI-approved OSS	2.7k	95	Active
10	EasySchematic Browser-based AV signal flow diagram tool for broadcast, live production, and AV integration.	92	94	OSI-approved OSS	127	93	Active
11	Repath Studio Web-based vector graphics editor with procedural tooling.	89	92	OSI-approved OSS	170	90	Active
12	Wayscriber Live overlay for drawing, annotating with zoom, hiding text, and capturing screenshots on Linux.	87	94	OSI-approved OSS	738	90	Active
13	Graphite Open source comprehensive 2D content creation tool suite for graphic design, digital art, and interactive real-time motion graphics — featuring node-based procedural editing	91	85	OSI-approved OSS	27.2k	89	Active
14	Excalidraw Virtual whiteboard for sketching hand-drawn like diagrams	89	82	OSI-approved OSS	131.7k	86	Active
15	Silex Silex is an online tool for visually creating static sites with dynamic data. With the free/libre spirit of internet, together.	88	82	OSI-approved OSS	3k	86	Active
16	Knotter Open-source workspace for graphs.	82	83	OSI-approved OSS	4	82	Active
17	ArcMindAI Turns product ideas into complete system architectures using AI, from diagrams to technical blueprints.	84	77	OSI-approved OSS	162	81	Active
18	Drawtonomy Whiteboard for driving diagrams.	78	77	OSI-approved OSS	109	78	Active
19	Terrazzo Use DTCG tokens JSON to generate code for web, mobile, native apps, and more	80	66	OSI-approved OSS	456	74	Active
20	Next AI Draw.io Next.js web app that integrates AI with draw.io diagrams.	80	65	OSI-approved OSS	35.9k	74	Active
21	Infinipaint Infinite space, infinite zoom, collaborative canvas program for massive sketches and notes.	73	68	OSI-approved OSS	485	71	Warning
22	Drawnix 开源白板工具（SaaS），一体化白板，包含思维导图、流程图、自由画等。All in one open-source whiteboard tool with mind, flowchart, freehand and etc.	75	62	OSI-approved OSS	14.7k	70	Active
23	Awatif Structural analysis and design software.	65	57	OSI-approved OSS	179	62	Warning
24	Freecut FreeCut is a professional-grade video editor that runs entirely in your browser. Professional video editing, zero installation. Create stunning videos with multi-track editing, keyframe animations, real-time preview, and high-quality exports.	58	36	OSI-approved OSS	2.2k	50	Warning
25	Modulz Code-based tool for designing and prototyping	57	37	OSI-approved OSS	19.3k	49	Warning
26	Poster Design Online image editor and poster design tool for marketing graphics and social content.	54	33	OSI-approved OSS	4.9k	46	Warning
27	app-store-screenshots end to end app store screenshot creation using AI	45	17	OSI-approved OSS	6.9k	34	Critical
28	Onlook The Cursor for Designers • An Open-Source AI-First Design tool • Visually build, style, and edit your React App with AI	45	16	OSI-approved OSS	26.7k	34	Critical
29	Superdesign Open-source AI product design agent for UI design and prototyping.	31	13	OSI-approved OSS	7k	24	Critical
30	EasyLogic Studio Fantastic web design tool.	17	0	OSI-approved OSS	500	10	Critical
31	MaterialVect Web-based Material 3 expressive SVG editor.	16	0	OSI-approved OSS	2	10	Critical
32	Screenlite Open-source digital signage software	14	0	OSI-approved OSS	365	8	Critical

Not Scored

Tracked for context, but excluded from rankings because comparable open/source-visible evidence is unavailable.

Canva

Visual design platform for everyone

ToolVitals does not score proprietary or unknown-license tools because their public source evidence is not comparable to open/source-visible projects.

Figma

Collaborative design tool for teams

ToolVitals does not score proprietary or unknown-license tools because their public source evidence is not comparable to open/source-visible projects.

Framer

Website builder for designers

ToolVitals does not score proprietary or unknown-license tools because their public source evidence is not comparable to open/source-visible projects.

Neoflow is an open-source whiteboard application designed for seamless collaboration and creativity. It combines simplicity with advanced features, making it perfect for teams, designers, and creative minds.

ToolVitals does not score proprietary or unknown-license tools because their public source evidence is not comparable to open/source-visible projects.