Apps similar to TreeProjects include Obsidian, which has a free version. Other options are Joplin, Zim, CherryTree and Trilium Notes. You can choose from more than 10 Note-taking Tools like TreeProjects for Windows, Mac, Linux, Android and iPad.
RunaBook is a tool for creating notes, managing tasks, and establishing knowledge bases. It features a tree-structured record system for easy organization, and offers various field types for data entry, such as text, number, date/time, and labels.
Russia
MindForger is a modern, free, open-source, privacy-focused and performance-driven Markdown IDE for creating, editing, and managing all types of notes.
Czechia
EU
Write beautifully. Organize easily. Find everything. Fuss free writing. Saves notes as RTF files on user specified folder. Can search across all notes. No sign up/log in required. Portable application.
A local-first, encrypted, note taking application with tree-like structures, all written and saved in rich text format. Supports Linux, Windows, and a certain walled-garden operating system.
Indonesia
TreeTime is an information organizer that stores text, numbers, and other data in linked trees. Mathematical operations like sums, ratios, and differences are calculated and updated on the fly. It exports to PNG, SVG, HTML, CSV, and plain text, and includes a configurable web interface.
GermanyEU
Factsplat lets you organize anything online. Move your links, documents, tools and tabs into organized dashboards. Set up your personal digital structure, with graph technology.
