HedgeDoc

Cross-platform hierarchical note taking application with focus on building large personal knowledge bases (fork of Trilium Notes).

Markdown notes taking app with live preview, document encryption, multi-user support, multi-organization capabilities and more.

A notes app built for quick capture: text notes, checklists, images, drawings, links, attachments, labels, colors, and reminders (alternative to Google Keep).

Collaborative writing, worldbuilding and D&D-session-planning app. Tools for organizing your notes and stories.

Knowledge base that works with a SQLite db file.

Note taking application with markdown editor and encryption support for mobile and desktop platforms. Runs client-side and syncs through your own Nextcloud instance or similar (alternative to Evernote).