Grafly

Free, AI-powered diagramming with zero server tracking

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Added Jul 2026

grafly.io

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What is Grafly?

Grafly is a free, browser-based diagramming tool for creating flowcharts, system architecture diagrams, AWS and GCP infrastructure maps. It uses AI to generate diagrams by accepting natural language descriptions through Claude, ChatGPT, or Gemini, converting them to valid JSON format. All diagrams are stored locally in your browser with no server backend, making it ideal for developers, architects, and teams who need quick, privacy-first diagram creation.

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Key Features of Grafly

Browser-based diagramming with no account required
AI diagram generation via LLM integration
Flowchart, system architecture, and infrastructure diagram support
AWS and GCP shape libraries
Mermaid and DOT/Graphviz format import/export
Local browser storage with no backend
Open-source (AGPL-3.0)
JSON import/export for version control

Who Should Use Grafly?

Create system architecture diagrams for technical documentation

Design AWS and GCP infrastructure maps

Generate flowcharts using AI descriptions

Export diagrams to GitHub, GitLab, Notion, and VS Code

Backup and restore diagrams via JSON

Self-host diagramming for teams with privacy requirements

Grafly: Pros & Cons

✓Pros

Completely free and open-source
No account or login required
AI-powered diagram generation with format reference
All data stored locally — no server tracking or privacy concerns
Native support for Mermaid in GitHub, GitLab, Notion, VS Code
Export to multiple formats (Mermaid, DOT/Graphviz)
Ability to self-host without restrictions

✕Cons

Diagrams are cleared if browser site data is deleted
Commercial license required for proprietary applications
Open-source license (AGPL-3.0) requires derivative works to remain open-source

Frequently Asked Questions about Grafly

Do I need to create an account to use Grafly?

No, Grafly is completely free and requires no account — just open the page and start drawing.

How does AI diagram generation work in Grafly?

Click the AI button to copy the format reference, paste it into Claude, ChatGPT, or Gemini along with your diagram description, then import the JSON the LLM generates using the Import JSON button.

Where are my diagrams stored?

All diagrams are stored exclusively in your browser's localStorage with no server backend, ensuring complete privacy.

What formats can I export my diagrams to?

You can export diagrams as Mermaid (supported in GitHub, GitLab, Notion, VS Code) or DOT/Graphviz format.

Can I use Grafly commercially?

Grafly is open-source under AGPL-3.0, so you can use it freely as long as derivative works remain open-source. For commercial use without open-sourcing your application, a commercial license is available.