Presenton: Self-Hosted AI Presentation Generator Reaches 4.7K Stars — Open-Source Gamma Alternative With Local Ollama Support

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Presenton is an open-source AI presentation tool that runs entirely locally, generating slide decks from prompts, documents, or dashboards. Supports OpenAI, Gemini, Claude, and local Ollama instances (Llama 3, Mistral) for air-gapped environments. FastAPI backend + Next.js frontend packaged as Docker container and Electron desktop app. Exports to PPTX and PDF with custom template support from existing PowerPoint files. Apache 2.0 licensed at 4.7K stars.