Step-by-step – Freeplane Installation in Fedora 32

Installing

2. 2. Enabling Flatpak

   How to Enable Flatpak on Fedora 32

   Snap Fedora 32 Setup

   GNU/Linux Installing Flatpak Guide

   First, Check if Flatpak is already enabled with:

   which flatpak

3. 3. Installing Freeplane

   Then to Install Freeplane in Fedora
   To setup the Repo play:

   flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

   For further Insight see the Flatpak Official Documentation.
   And after:

   flatpak install https://flathub.org/repo/appstream/org.freeplane.App.flatpakref

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo