Welcome to Treeline

Treeline is a personal finance app that runs entirely on your computer. Your data lives in a single DuckDB file—a standard format you can query, back up, or move however you like. No cloud accounts, no subscriptions.

We built Treeline for people who want to tinker—who want to ask questions of their data that no product manager anticipated. It is a foundation you can build on as your needs evolve.

Beta Software

Treeline is in active development. Expect rough edges and breaking changes.

Get Started

• Installation - Download Treeline for your platform
• Quick Start - Import your first transactions
• CLI Overview - Power-user workflows from the terminal
• Plugins - Extend Treeline with community plugins

Core Concepts

Plugin-based. Everything beyond the core transaction database is a plugin. Budget tracking, savings goals, subscription management—install what you need, ignore what you do not.

Query anything. Treeline includes a built-in SQL query interface. Ask any question you can express in SQL.

Open source. The desktop app, core library, CLI, and plugin SDK are all open source. Read the code, contribute, or fork it entirely.