Xournal++ is a hand note taking software written in C++ with the target of flexibility, functionality and speed. Stroke recognizer and other parts are based on Xournal Code, which you can find at sourceforge. For general usage, consult the User Manual. Answers to some common questions can be found in the FAQ.
Installing
The Xournal++ team officially supports a FlatHub release, which can be installed with
flatpak install flathub com.github.xournalpp.xournalpp
Note that for Xournal++ to work properly, you must have at least one GTK theme and one icon theme installed on Flatpak. To enable LaTeX support, you will also need to install the TeX Live extension:
flatpak install flathub org.freedesktop.Sdk.Extension.texlive
more information: https://github.com/xournalpp/xournalpp