Powerful collaborative visual workspace with robust AI brainstorming and diagramming tools, but broader feature set.
#1CopilotKit records 403,148 monthly visits with +199.4% month-over-month growth and Freemium pricing. Napkin AI records 1,029,978 monthly visits with -17.5% growth and Freemium pricing.

Open-source frontend stack for building AI agents and copilots inside your own product
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | copilotkit.ai | napkin.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 403.15K (403,148) | 1.03M (1,029,978) |
| MoM Traffic Delta |
| +268.49K (+199.4%) |
| -218.06K (-17.5%) |
| Primary Market & Share | 🇺🇸 United States (18.9%) | 🇮🇳 India (9.1%) |
|---|
| Direct Visits / mo | 179.26K | 443.98K |
|---|
| User Rating | 4.6 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

Open-source frontend stack for building AI agents and copilots inside your own product
Ship a working copilot UI in minutes with drop-in components for React, Angular, Vue, iOS, and Android, or go fully headless for total control over rendering.
A general-purpose bi-directional link between your app and any agent backend, with integrations for the OpenAI Agents SDK, Claude Agent SDK, LangChain, Google ADK, AWS Strands, Mastra, and many more.
Agents return real UI — charts, forms, tables, and approval prompts rendered with your own design system on the same screen the user is already working in.
Let agents read and write application state, call your frontend functions, and pause for human approval before sensitive actions are executed.

Turn plain text into diagrams, infographics, and presentation-ready visuals.
Paste or import your text and Napkin generates infographics, diagrams, flowcharts, mind maps, and data charts that fit your content.
Napkin Slides collaborates with you to turn ideas into complete, ready-to-present decks rather than static images.
Adjust colors, fonts, layouts, and icons, reshape individual elements, and match your brand — nothing is locked after generation.
Export visuals as PPT, PNG, PDF, or SVG and drop them into PowerPoint, Google Slides, Keynote, Notion, or any tool you already use.
Powerful collaborative visual workspace with robust AI brainstorming and diagramming tools, but broader feature set.
#1
Generates beautifully styled presentations and documents from text prompts, though less focused on inline diagramming.

Turn text and data into polished infographics, reports and videos with AI
Collaborative whiteboard featuring built-in AI tools for flowcharts, mind maps, and diagrams.
SpecialistCombines conversational workflow drafting with visual flow builders, focusing on workflow automation rather than frontend copilot embedding.


Specialized in AI diagramming, mind maps, and flowcharts, but lacks Napkin's seamless inline text integration.
Transforms natural language into structured mind maps and visual flowcharts on an infinite canvas.

SpecialistIDE extension providing model-agnostic AI coding assistance rather than a frontend UI component library for web applications.

SpecialistFocuses on Python-based agent building and deployment rather than frontend React component integration for web applications.

Delivers a managed platform for building and deploying conversational agents, though less focused on open-source frontend React UI kits.

SpecialistTurn any idea into an interactive visual story with AI agents

Free / Open-sourceProvides an open-source TypeScript framework where agents and user interfaces share capabilities, aligning with CopilotKit's architecture.

Powerful collaborative visual workspace with robust AI brainstorming and diagramming tools, but broader feature set.
Generates beautifully styled presentations and documents from text prompts, though less focused on inline diagramming.
Turn text and data into polished infographics, reports and videos with AI
Collaborative whiteboard featuring built-in AI tools for flowcharts, mind maps, and diagrams.
SpecialistCombines conversational workflow drafting with visual flow builders, focusing on workflow automation rather than frontend copilot embedding.
Specialized in AI diagramming, mind maps, and flowcharts, but lacks Napkin's seamless inline text integration.
Transforms natural language into structured mind maps and visual flowcharts on an infinite canvas.
Delivers a managed platform for building and deploying conversational agents, though less focused on open-source frontend React UI kits.
SpecialistTurn any idea into an interactive visual story with AI agents
Free / Open-sourceProvides an open-source TypeScript framework where agents and user interfaces share capabilities, aligning with CopilotKit's architecture.