Laverna

An Opensource, Private & Encrypted Note-Taking Web App

Screenshots

Hunter's comment

It's an opensource and secure note-taking web app. You don't need to install any software or mobile app to take notes. Just open their browser and start taking notes. However, it is also available in downloadable version for Mac, Windows and Linux. They are planning to release an Android version very soon.

Laverna is a JavaScript note taking application with Markdown editor and encryption support. Consider it like open source alternative to Evernote.
Source

GitHub code

Link

https://laverna.cc/