Syllogic

Syllogic is an open-source (AGPL-3.0) personal finance app for self-hosters who want a polished dashboard without handing their transaction history to a hosted SaaS. It deploys with Docker Compose, Railway, or CasaOS, stores data in PostgreSQL 16, and includes a live demo you can click through before deploying. The stack combines a Next.js 16 frontend with Drizzle ORM, a FastAPI + Celery backend, Redis for job queues and caching, and BetterAuth for authentication. AI categorization uses the OpenAI API, but it is optional: without an API key Syllogic still works with rule-based matching and manual cleanup. Today it covers balances and cash flow, category analytics, recurring spend and subscription detection, transfer and reimbursement linking, CSV import/export, and an MCP server that connects compatible LLM clients such as Claude Desktop to your financial data.