TreeSheets is a free and open source hierarchical spreadsheet application for Linux, Windows and MacOS. You can use this application as a free form data organizer application. It comes with todo lists, calendars, project management, brainstorming, organizing ideas, planning, requirements gathering, presentation of information and many more. It is released under the ZLIB license.
How to Install TreeSheets on Ubuntu
TreeSheets is available as a flatpak package from the remote flathub. For the latest version of TreeSheets, you can use this flatpak method. Open the terminal app (ctrl+alt+t) and run below command.
flatpak install flathub com.strlen.TreeSheets
You can open it using below command or via the Show Apps Ubuntu dock menu.
flatpak run com.strlen.TreeSheets
Note: If you don’t have flatpak and flathub on your system, then install it using below commands and restart it after the installation. After that try to install TreeSheets.
sudo apt install flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
And also uninstall it using below commands.
flatpak uninstall com.strlen.TreeSheets
sudo flatpak uninstall com.strlen.TreeSheets
Install TreeSheets via Repository:
You can also install it via default Ubuntu repository using below command.. But you will get a older version.
sudo apt install treesheets
And open it using below command.
And also uninstall it using below command
sudo apt remove treesheets