Notes
Apps
QOwnNotes
Open source notepad with Markdown support and todo list manager for GNU/Linux
Xournal++
Handwriting notetaking software with PDF annotation support
Zettlr
Your One-Stop Publication Workbench
Notesnook
End-to-end encrypted note taking alternative to Evernote.
Saber
Cross-platform libre handwritten notes app
CherryTree
A hierarchical note taking application, featuring rich text and syntax highlighting
Standard Notes
End-to-end encrypted note-taking app for digitalists and professionals
Butterfly
Powerful, minimalistic, cross-platform, opensource note-taking app
Lunatask
All-in-one encrypted to-do list, habit and mood tracker, journaling and notes app
Folio
A beautiful markdown note-taking app for GNOME
Mochi
Take notes and make flashcards using markdown, then study them using spaced repetition.
Beaver Notes
Privacy-focused note-taking application
Joplin
The secure note taking and to-do app with synchronisation capabilities
Notes
Notes is an open source and cross-platform note-taking app that is both beautiful and powerful