FossFLOW - Isometric Diagramming Tool

FossFLOW is a powerful, open-source Progressive Web App (PWA) for creating beautiful isometric diagrams. Built with React and the Isoflow (Now forked and published to NPM as fossflow) library, it runs entirely in your browser with offline support.

• 📝 FOSSFLOW_TODO.md - Current issues and roadmap with codebase mappings, most gripes are with the isoflow library itself.
• 🤝 CONTRIBUTORS.md - How to contribute to the project.

Features

• 🎨 Isometric Diagramming - Create stunning 3D-style technical diagrams
• 💾 Auto-Save - Your work is automatically saved every 5 seconds
• 📱 PWA Support - Install as a native app on Mac and Linux
• 🔒 Privacy-First - All data stored locally in your browser
• 📤 Import/Export - Share diagrams as JSON files
• 🎯 Session Storage - Quick save without dialogs
• 🌐 Offline Support - Work without internet connection

Try it online

Go to https://stan-smith.github.io/FossFLOW/

Quick start on local environment

# Clone the repository
git clone https://github.com/stan-smith/FossFLOW
cd FossFLOW

# Make sure you have npm installed

# Install dependencies
npm install

# Start development server
npm start

Open http://localhost:3000 in your browser.

How to Use

Creating Diagrams

1. Add Items: Press the “+” button on the top right menu, the library of components will appear on the left. Drag and drop components from the library onto the canvas
2. Connect Items: Use connectors to show relationships between components
3. Customize: Change colors, labels, and properties of items
4. Navigate: Pan and zoom to work on different areas

Saving Your Work

• Auto-Save: Diagrams are automatically saved to browser storage every 5 seconds
• Quick Save: Click "Quick Save (Session)" for instant saves without popups
• Save As: Use "Save New" to create a copy with a different name

Managing Diagrams

• Load: Click "Load" to see all your saved diagrams
• Import: Load diagrams from JSON files shared by others
• Export: Download your diagrams as JSON files to share or backup
• Storage: Use "Storage Manager" to manage browser storage space

Keyboard Shortcuts

• Delete - Remove selected items
• Mouse wheel - Zoom in/out
• Click and drag - Pan around canvas
• NEW Crtl+Z undo Ctrl+Y redo

Building for Production

# Create optimized production build
npm run build

# Serve the production build locally
npx serve -s build

The build folder contains all files needed for deployment.

If you need the app to be deployed to a custom path (i.e. not root), use instead:

# Create optimized production build for given path
PUBLIC_URL="https://mydomain.tld/path/to/app" npm run build

That will add the defined PUBLIC_URL as a prefix to all links to static files.

Deployment

Static Hosting

Deploy the build folder to any static hosting service:

• GitHub Pages
• Netlify
• Vercel
• AWS S3
• Any web server

Important Notes

1. HTTPS Required: PWA features require HTTPS (except localhost)
2. Browser Storage: Diagrams are saved in browser localStorage (~5-10MB limit)
3. Backup: Regularly export important diagrams as JSON files

Browser Support

• Chrome/Edge (Recommended) ✅
• Firefox ✅
• Safari ✅
• Mobile browsers with PWA support ✅

Troubleshooting

Storage Full

• Use Storage Manager to free space
• Export and delete old diagrams
• Clear browser data (last resort - will delete all diagrams)

Can't Install PWA

• Ensure using HTTPS
• Try Chrome or Edge browsers
• Check if already installed

Lost Diagrams

• Check browser's localStorage
• Look for auto-saved versions
• Always export important work

Technology Stack

• React - UI framework
• TypeScript - Type safety
• Isoflow - Isometric diagram engine
• PWA - Offline-first web app

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

Isoflow is released under the MIT license.

FossFLOW is released under the Unlicense license, do what you want with it.

Acknowledgments

Built with the Isoflow library.

x0z.co