Xournal++ is a handwriting notetaking software with PDF annotation support. Written in C++ with GTK3, supporting Linux (e.g. Ubuntu, Debian, Arch, SUSE), macOS and Windows 10. Supports pen input from devices such as Wacom Tablets.

Xournal++ website

Example xopp-files and resources

Infinitely take notes, sketch and learn. Xournal++ Mobile is a port of Xournal++ files and features to various mobile platofrms and the web. Mirror of the Xournal++ Mobile repository on GitLab.