Scrapbox - A new style of note-taking that lets you create, discuss, and learn together in one self-organizing space.
Synology Note Station - Without needing to spend money on Evernote, Synology Note Station provides a desktop client to organize all your random notes in one place.
Penbook - The nicest freehand writing app ✍️
UpNote - A beautiful and clean cross-platform app for notes organizer
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.
Note Board - Productivity app. Save information like a sticky notes.