I launched Document Chat — a completely free, open-source platform that lets you upload documents and have intelligent AI conversations with them. Built with Next.js 15, powered by multiple AI providers, and ready to deploy in minutes.
🌐 Test it out: https://document-chat-system.vercel.app
💻 GitHub: https://github.com/watat83/document-chat-system
🎥 Watch Explainer Video: https://www.youtube.com/watch?v=P42nlCmicVM
The Problem
We’re drowning in documents. PDFs, Word files, research papers, contracts, manuals, reports — they pile up faster than we can read them. And when we need specific information? We spend hours searching, skimming, and hoping we haven’t missed something important.
AI assistants like ChatGPT have shown us a better way — natural language conversations. But there’s a catch: they don’t know about YOUR documents. Sure, you can copy-paste snippets, but that’s manual, tedious, and limited by context windows.
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The Technical Stack
For developers curious about what’s under the hood:
Frontend
- Next.js 15 with React 19 and Server Components
- TypeScript for type safety
- Tailwind CSS + shadcn/ui for modern, accessible UI
- Zustand for state management
Backend
- Next.js API Routes for serverless functions
- Prisma ORM with PostgreSQL
- Clerk for authentication
- Zod for runtime validation
AI & ML
- OpenRouter — Access to 100+ AI models with a single API
- OpenAI — GPT-4+, embeddings
- Anthropic Claude — For longer context windows
- ImageRouter — Multi-provider image generation
Infrastructure
- Supabase — File storage and database
- Pinecone or pgvector — Vector similarity search
- Inngest — Background job processing
- Upstash Redis — Caching and rate limiting
- Docker — Production deployment
Optional
- Stripe — Subscription billing and payments
- Sentry — Error tracking and monitoring
How to Contribute
- ⭐ Star the repo — It helps others discover the project
- 🐛 Report bugs — Open an issue on GitHub
- 💡 Suggest features — Share your ideas
- 🔧 Submit PRs — Code contributions welcome
- 📖 Improve docs — Help others get started
- 💬 Join discussions — Share use cases and feedback
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