TreeTime

TreeTime is an open-source tool for organizing notes, tasks, and structured data using linked hierarchical trees. Unlike traditional list-based planners or single-hierarchy note apps, TreeTime allows each data item to exist in multiple hierarchies simultaneously. This flexible structure makes it easy to view the same information from different perspectives without duplicating data.

One of TreeTime’s most powerful features is its recursive calculation capabilities. You can perform sums, ratios, and other operations across branches of your trees, enabling structured planning, project tracking, or analytical workflows directly within your data.

Browsing your information is intuitive and interactive. While TreeTime is a local application, it can optionally export your trees in real time to a view-only web interface (localhost:2020). The interface uses SVG graphics and clickable links, allowing you to explore complex structures visually without altering the underlying data.

TreeTime is designed for users who need flexible organization of complex information. It’s ideal for project planning, research, hierarchical note-taking, knowledge management, or any situation where data naturally forms nested relationships. Since everything is stored in plain text files and the software runs locally with no account required, your information stays private and portable.

In summary, TreeTime is more than a note app or planner: it’s a framework for organizing and analyzing information in a multi-dimensional hierarchy. Whether you’re managing tasks, planning projects, or exploring structured data, TreeTime gives you the tools to handle complexity without losing clarity.