Cost / License
- Free
- Open Source (MIT)
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Flathub




TreeTime is described as 'Lets you organize notes, tasks, and projects using linked hierarchical trees. Perform recursive calculations on your data and explore your information visually through a lightweight, view-only local web interface — all while keeping your data private and portable' and is a todo list manager in the office & productivity category. There are more than 100 alternatives to TreeTime for a variety of platforms, including Windows, Mac, Linux, Web-based and Android apps. The best TreeTime alternative is Obsidian, which is free. Other great apps like TreeTime are Joplin, ONLYOFFICE, Logseq and Anytype.




Offers limitless nested lists for outlining, instant sync on web and mobile, real-time collaboration, file and photo uploads, kanban boards, tagging, offline editing, hoisting for branch focus, content sharing, text highlighting, and Dropbox auto-backup.




Cloud spreadsheet app featuring real-time editing, support for Excel and CSV import/export, chart building, formula functionality, integrated chat, access controls, cloud syncing, access via web and mobile platforms, scripting, embedding, templates, and Drive integration.




Freeplane is a powerful and free software for building mind maps. It is a redesigned version of the well known FreeMind , and is created by one of FreeMind's key developers.




SiYuan is a desktop Markdown Block-Reference and Bidirectional-Link note-taking application. Support fine-grained block-level reference and Markdown WYSIWYG.




ghostwriter is a feature-rich text editor using Markdown syntax which makes it suitable for note-taking, document redaction, simple HTML website creation and much more.




Introducing Fossify Notes – your ultimate tool for effortless note-taking, organization, and planning. Simplify your life with this intuitive organizer designed to streamline your tasks and ideas effortlessly.




On-premise office suite featuring advanced word processing, spreadsheets, and presentations, unmatched compatibility with 100+ formats, OOXML support, six-month updates, enterprise hardening, Visio and Publisher import, PDF export, and support for 50+ languages.



Whether it's bookmarks or passwords, files or shopping lists...Turtl organizes it all and makes it easy to find later. Sync across your devices. Leave nothing behind.




Free and open source, Java-based mind-mapping app for the desktop featuring a hierarchical editor that emphasizes folding.


Plain text notepad with markdown support and todo list manager for Linux, Mac OS X and Windows, that works together with the notes application of ownCloud.




Open-source Markdown editor on Mac, Windows, and Linux offering real-time preview, clean interface, and various themes. Supports math expressions, exports HTML/PDF, allows image pasting, and more.



