For plaintext/markdown: https://standardnotes.org/ https://standardnotes.org/ (self hosted on Heroku) https://simplenote.com/ https://simplenote.com/ For annot

For plaintext/markdown: https://standardnotes.org/ https://standardnotes.org/ (self hosted on Heroku) https://simplenote.com/ https://simplenote.com/ For annotations/drawing/writing: OneNote Evernote Bear