Open-source alternative to Gamma.app - Create stunning presentations from any content using AI. Self-hosted, privacy-focused, and fully customizable.
Open Gamma is a modern, self-hosted presentation generator that leverages AI to transform your ideas into professional presentations. Built with the latest web technologies and designed with privacy in mind, it offers a powerful alternative to cloud-based presentation tools.
- Privacy First: Your data stays on your servers. No third-party tracking or data collection.
- BYOK (Bring Your Own Key): Use your own API keys for AI providers - pay only for what you use.
- Local AI Support: Run completely offline with Ollama integration.
- Modern Stack: Built with Next.js 16, React 19, and the latest AI SDK.
- Real-time Collaboration: Work together with your team using Yjs-powered sync.
Manage all your presentations in one place
Secure authentication with multiple providers
Easy account creation
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Generate complete presentations from:
Supports multiple AI providers including OpenAI, Anthropic Claude, Google Gemini, OpenRouter, and local Ollama models. |
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Export your presentations in multiple formats:
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| Category | Technologies |
|---|---|
| Framework | Next.js 16.0, React 19.2, TypeScript 5 |
| Styling | Tailwind CSS 4, shadcn/ui, Radix UI |
| Database | Prisma 6 + SQLite (default) / PostgreSQL |
| Authentication | NextAuth.js 5 (OAuth + Credentials) |
| AI Integration | Vercel AI SDK 5, OpenAI, Anthropic, Google, OpenRouter, Ollama |
| Real-time | Yjs, Hocuspocus, WebSockets |
| Rich Text | Plate, Slate |
| State Management | Zustand, TanStack Query |
| API | tRPC (Type-safe RPC) |
| Export | pptxgenjs, jsPDF, html2canvas |
- Node.js 20+
- npm or pnpm
- (Optional) Docker & Docker Compose
- (Optional) Ollama for local AI
# Clone the repository
git clone https://github.com/h9-tec/Open_Gamma.git
cd Open_Gamma
# Install dependencies
npm install
# Set up environment variables
cp .env.example .env.local
# Initialize the database
npx prisma db push
# Start the development server
npm run devOpen http://localhost:3000 in your browser.
# With GPU support (for local Ollama)
docker compose --profile gpu up -d
# CPU only
docker compose --profile cpu up -d
# Production build
docker compose -f docker-compose.prod.yml up -dCreate a .env.local file based on .env.example:
# Database
DATABASE_URL="file:./data/opengamma.db"
# Authentication (required)
AUTH_SECRET="your-super-secret-key-change-in-production"
NEXTAUTH_URL="http://localhost:3000"
# OAuth Providers (optional)
AUTH_GOOGLE_ID=""
AUTH_GOOGLE_SECRET=""
AUTH_GITHUB_ID=""
AUTH_GITHUB_SECRET=""
# AI Providers (at least one required)
OPENAI_API_KEY=""
ANTHROPIC_API_KEY=""
GOOGLE_API_KEY=""
OPENROUTER_API_KEY=""
# Local AI
OLLAMA_URL="http://localhost:11434"
# Image Search (optional)
PEXELS_API_KEY=""
PIXABAY_API_KEY=""
# Collaboration (optional)
NEXT_PUBLIC_HOCUSPOCUS_URL="ws://localhost:1234"| Provider | Setup | Models |
|---|---|---|
| OpenAI | Get key from platform.openai.com | GPT-4o, GPT-4o-mini |
| Anthropic | Get key from console.anthropic.com | Claude 3.5 Sonnet, Claude 3 Opus |
| Get key from aistudio.google.com | Gemini 2.0, Gemini 1.5 Pro | |
| OpenRouter | Get key from openrouter.ai | Access to 100+ models |
| Ollama | Install from ollama.ai | Llama 3, Mistral, Gemma, etc. |
open-gamma/
├── src/
│ ├── app/ # Next.js App Router
│ │ ├── api/ # API routes (auth, tRPC)
│ │ ├── dashboard/ # User dashboard
│ │ ├── editor/[id]/ # Presentation editor
│ │ ├── presentations/ # Presentation management
│ │ └── login/, register/ # Authentication pages
│ │
│ ├── components/
│ │ ├── ui/ # shadcn/ui components
│ │ ├── editor/ # Editor components
│ │ ├── dashboard/ # Dashboard components
│ │ └── layout/ # Layout components
│ │
│ ├── lib/
│ │ ├── ai/providers/ # AI provider factory
│ │ ├── auth/ # NextAuth configuration
│ │ ├── db/ # Prisma client
│ │ └── trpc/ # tRPC setup
│ │
│ ├── server/trpc/routers/ # tRPC API routers
│ ├── stores/ # Zustand stores
│ └── types/ # TypeScript types
│
├── prisma/
│ └── schema.prisma # Database schema
│
├── docker/ # Docker configurations
├── images/ # README images
└── data/ # SQLite database (gitignored)
Open Gamma uses tRPC for type-safe API communication. Key endpoints:
// Create presentation
trpc.presentation.create.mutate({ title, description })
// Generate with AI
trpc.ai.generatePresentation.mutate({
prompt,
provider,
model,
slideCount
})
// Export
trpc.presentation.export.mutate({ id, format: 'pptx' | 'pdf' })// Get all themes
trpc.theme.getAll.query()
// Create custom theme
trpc.theme.create.mutate({ name, colors, typography })# Run development server
npm run dev
# Run type checking
npx tsc --noEmit
# Run linting
npm run lint
# Database operations
npx prisma studio # Open Prisma Studio
npx prisma db push # Push schema changes
npx prisma migrate dev # Create migration- AI image generation for slides
- Presentation templates marketplace
- Advanced animations and transitions
- Presenter mode with timer
- Comments and annotations
- Version history
- Mobile responsive editor
- Plugin system
Contributions are welcome! Please read our Contributing Guide for details.
- Fork the repository
- Create your feature branch (
git checkout -b feature/amazing-feature) - Commit your changes (
git commit -m 'Add amazing feature') - Push to the branch (
git push origin feature/amazing-feature) - Open a Pull Request
This project is licensed under the MIT License - see the LICENSE file for details.
- Gamma.app - Inspiration for this project
- shadcn/ui - Beautiful UI components
- Vercel AI SDK - AI integration made simple
- Prisma - Type-safe database access
- Yjs - Real-time collaboration framework
Website | Documentation | Issues
Made with love by the Open Gamma community