Joplin — Privacy-Focused Open-Source Note Taking App

What it is

Joplin is a privacy-focused open-source note taking application with sync capabilities across Windows, macOS, Linux, Android, and iOS. It uses Markdown for formatting, supports end-to-end encryption for synced notes, and works with multiple sync targets including Nextcloud, Dropbox, OneDrive, S3, and Joplin Cloud.

Joplin targets users who want a note taking app that respects their privacy and gives them full control over their data. Unlike Evernote or Notion, Joplin stores notes locally and encrypts them before syncing.

How it saves time or tokens

Joplin provides a consistent note taking experience across all platforms with automatic sync. End-to-end encryption means you can sync through third-party services (Dropbox, OneDrive) without exposing note content to the service provider. The Markdown format ensures notes are portable and not locked into a proprietary format. A CLI version allows terminal-based note management for developers.

How to use

1. Install Joplin:

brew install --cask joplin     # macOS GUI
npm i -g joplin                # CLI version
snap install joplin-desktop    # Linux

1. Create and manage notes:

# CLI usage
joplin mknote 'Meeting Notes 2026-04-15'
joplin use 'Meeting Notes 2026-04-15'
joplin edit

1. Configure sync in Settings > Synchronization. Choose your sync target and enable end-to-end encryption.

Example

# Joplin CLI workflow
joplin mknote 'Project Ideas'
joplin set 'Project Ideas' body '# Project Ideas\n\n## AI Agent Framework\n- Build a lightweight agent SDK\n- Focus on tool calling\n- Support MCP protocol\n\n## CLI Dashboard\n- Terminal UI for monitoring\n- Real-time metrics display'

# List notebooks and notes
joplin use Notebook1
joplin ls

# Export notes
joplin export --format md /path/to/export

# Search across all notes
joplin search 'agent framework'

Related on TokRepo

• Self-Hosted Tools — Self-hosted productivity apps
• Documentation Tools — Note taking and documentation

This tool integrates with standard development workflows and requires minimal configuration to get started. It is available as open-source software with documentation and community support through the official repository. The project follows semantic versioning for stable releases.

For teams evaluating this tool, the key advantage is reducing manual work in repetitive tasks. The automation provided by the built-in features means less custom code to maintain and fewer integration points to manage. This translates directly to lower maintenance costs and faster iteration cycles.

Common pitfalls

• End-to-end encryption must be enabled manually in settings; it is not turned on by default. Enable it before syncing sensitive notes.
• The Markdown editor in the desktop app has a split view (editor + preview); some users prefer WYSIWYG which is available via a plugin.
• Sync conflicts can occur when editing the same note on multiple devices simultaneously; Joplin creates conflict notes rather than silently merging changes.