Turtl - The secure, collaborative notebook
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Carnet - Opensource rich text note taking app
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Nextcloud Notes - An android client for Nextcloud Notes App
xournal - Lightweight notetaking and sketching app.