Firefly III is a powerful, open‑source personal finance manager designed for people who want full control over their financial data. It supports double‑entry bookkeeping, multi‑currency accounts, detailed reporting, and a flexible rule engine — all running on your own server for maximum privacy.

Highlights

🧮 Double‑entry accounting — Accurate, structured transaction management.

🌍 Multi‑currency support — Track accounts and budgets across currencies.

📥 Data Importer — Cleanly import CSVs and bank exports with rule‑based cleanup.

⚙️ Advanced rule engine — Automate categorisation, tagging, and transaction transformations.

📊 Informative reports — Weekly, monthly, yearly insights plus audit‑friendly list views.

🔌 JSON REST API — Integrate with apps, scripts, dashboards, or automations.

🏷️ Budgets, categories, tags — Flexible organisation for any workflow.

Why it matters

If you want a privacy‑respecting alternative to cloud‑locked finance apps, Firefly III gives you full ownership of your data with enterprise‑grade features and a clean, extensible design. Ideal for anyone building a self‑hosted, transparent financial workflow.