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A local-first Markdown note app with an optional self-hosted encrypted sync server.

A free Markdown notebook that stores notes as ordinary files and offers optional encrypted sync.

A Markdown notes app with wikilinks, graph views, offline work, and free encrypted sync.

Store notes and files in an encrypted notebook that syncs across devices.

A private, open-source writing app built around searchable notes, pins, and trails.

AI-native Markdown notes with encrypted sync for developers

An AI notebook that checks facts, links related ideas, and helps keep notes current.

Local Markdown notebooks with backlinks, search, and optional self-hosted encrypted sync.

Capture notes and find them later with tags and Smart Folders.

An open-source handwriting notebook with nested folders and encrypted cross-device sync.

A local-first personal knowledge workspace for private notes, linked objects, and databases.

A local-first desktop notebook that stores Markdown notes and canvases on the user’s computer.

Daily and project notes connected to tasks, Apple Calendar, and Reminders.

Write and annotate handwritten notes on Android with page layouts, linked notes, and PDF tools.

Manage several encrypted-folder backends from a desktop interface

A maintained Thunderbird fork with encrypted-message search

Organize a personal knowledge base with block-level notes, references, and bidirectional links.

End-to-end encrypted messaging, voice, video, and file sharing for organizations.

An outliner that turns notes into searchable, reusable knowledge with tags and saved views.

Organize notes, lists, projects, and ideas in tagged bundles with offline editing and sync.

A multi-format notebook for handwriting, PDFs, voice notes, and study documents.

Capture daily notes in local Markdown files and connect ideas with backlinks.

A fast local-first notes app with Markdown, offline writing, semantic search, and optional sync.

Plan and share personal or professional events in an encrypted calendar across desktop and mobile apps.