Joplin is a free, open-source note-taking and to-do application that handles large collections of notes organized into notebooks. Notes are written in Markdown, can be searched, tagged and edited either in the app or in your own text editor.

Highlights

• Offline-first, with sync to services of your choice
• Apps for Windows, macOS, Linux, Android and iOS
• Import from Evernote, including formatted content and attachments, and from plain Markdown files

License note: code is AGPL-3.0-or-later unless a directory contains its own license file; for example, the server package has separate terms.