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Joplin

What it is

Joplin is a free, open-source note-taking and to-do application, which can handle a large number of notes organized into notebooks.

What problem it solves

It provides a secure, private way to sync notes across multiple devices (desktop and mobile) using various cloud or self-hosted services (Nextcloud, Dropbox, WebDAV, etc.). It supports end-to-end encryption (E2EE).

Where it fits in the stack

Tool / AI Assistants & Knowledge. It serves as a privacy-focused knowledge management and note-taking tool.

Typical use cases

  • Organizing personal and professional notes in a structured notebook format.
  • Capturing web pages and screenshots using the web clipper extension.
  • Syncing notes across devices with E2EE for maximum privacy.

Strengths

  • Privacy: Strong E2EE and support for various sync targets (including self-hosted).
  • Format: Notes are stored in Markdown format.
  • Extensibility: Support for plugins and themes.
  • Web Clipper: Powerful extension for capturing online content.

Limitations

  • Sync Conflict Resolution: Can sometimes be less intuitive than cloud-native alternatives like Notion.
  • UI: While functional, the UI might feel less "polished" to some users compared to proprietary tools.

When to use it

  • When you need a cross-platform, open-source note-taking app with strong privacy features.
  • When you want to host your own note synchronization (e.g., using Nextcloud).

When not to use it

  • When real-time, multi-user collaboration is the primary requirement.
  • When you prefer the "canvas" or "block" based approach of tools like Obsidian or Notion.

Licensing and cost

  • Open Source: Yes (MIT)
  • Cost: Free
  • Self-hostable: Yes (sync targets can be self-hosted)

Sources / References

Contribution Metadata

  • Last reviewed: 2026-04-06
  • Confidence: high