Stylishly Take your notes, mindmaps, and tasks with this Lightweight App: TreeSheets.

Ever wanted that note-taking application that gives you more freedom to write, visualize and organize your thoughts and ideas?

TreeSheets may be the application you have been waiting for.

What's TreeSheets?

TreeSheets is a lightweight note-taking application with spreadsheets features, mind mapping, outline options, and note-taking with text editing advanced features.

The unique features mix makes TreeSheets suitable as note app, Todo list organizer, project management and planning, requirement collection, and documentation writing.

TreeSheets screenshot (src. TreeSheets)

I have been using TreeSheets for months now. It helps me organize my ideas, thoughts, and project management. TreeSheets was featured in our article about note-taking apps with unique features.

TreeSheets offers a hierarchical structure for the notes, sheets, and mindmaps, with a toolset to browse, zoom, customize, and style the cells.

So you can use it as:

  • Outliner
  • Todo list
  • Mindmapping software
  • Text editor
  • Private journal
  • Data presentation
  • Project management


  1. Lightweight
  2. Fast
  3. Works on Windows, Linux and macOS
  4. Tabbed interface
  5. Multiple style support
  6. Search
  7. Zoom and focus
  8. Text-style and format
  9. Advanced grid support
  10. Grid size customization
  11. Tags support
  12. Image import and styling
  13. Multiple export formats (HTML, JSON, CSV, Image)
  14. Advanced navigation options
  15. System tray support
  16. Memory friendly
  17. Old windows version support (Windows XP, Vista, and Windows 7)
  18. Search & replace function

Learning ThreeSheets

TreeSheets comes with an embedded tutotials that is written in TreenSheets, you can check it as it loads on startup.  It also offers a simple tutorial here.

Even though TreeSheet is a small application, it requires investing some time to learn it and master its shortcuts. However, you can find several video tutorials on YouTube to get you started.


  1. Windows (XP, Vista, 7, 8 and 10)
  2. macOS (10.7+)
  3. Linux (Debian/ Ubuntu and AppImage (Universal))


TreeSheets is created by "Wouter van Oortmerssen" and released as an open-source project under ZLIB license.

Support TreeSheets

If you use this project and interested to support it,  you can donate to the developer who keeps the project up-to-date.

Building from scratch

If you are a developer and interested in building TreeSheets from scratch, the developer "Wouter van Oortmerssen" provides detailed instructions for Windows, macOS, and Linux platforms.

On a personal note, I use TreeSheets with a combination with TiddlyWiki. It provides a good support for CSV and JSON files.


Photo by Startup Stock Photos from Pexels

  • Content management systems or CMS for short, like WordPress, often comes as database applications. But, these are not the only types of CMSs out there, we have other types to consider: Flat-file CMS Headless CMS Git-based CMS A Flat-file CMS is a content management system that does not use any...Read more...

  • Google Firebase is a Google hosted cloud real-time NoSQL database for building mobile, web and desktop applications. It offers a database backend, an API, user registration and   authentication, monitoring, user permissions, file and attachment store, and more. With Firebase, all what developers need to start building an app is a...Read more...

  • File compression and decompression are daily operation for almost all type of users. By default, some operating systems like macOS and Windows supports Zip format as the default compressed file format. Users can compress and decompress files with one click. However, other file compression formats like (RAR, ACE) are not...Read more...

  • The internet has problems, let's say there are 50 million weblogs, and it's going up, our focus here is on a new and efficient way to keep up with all the cool stuff that's happening on the Internet. What we are talking about is using a single website that becomes...Read more...

  • Every time you visit your favorite website searching for new content and find none, you waste time. RSS feeds are a way to eliminate this process by bringing all the latest content directly to you in one place. It's called this because it's a feed from websites that makes indication...Read more...