Joplin
Joplin is an open-source, cross-platform note-taking application designed for secure, private knowledge management. It functions as a local-first productivity platform, maintaining a complete relational database on the user's device to ensure offline availability and high-performance data retrieval. The application prioritizes data sovereignty by implementing an end-to-end encryption layer, which secures all information locally with a master key before any synchronization occurs.
The platform distinguishes itself through a delta-based synchronization engine that transmits only specific file changes, optimizing performance across multiple devices and operating systems. Users can extend the core environment through a plugin-based architecture that supports custom themes, scripts, and UI components. For professional or collaborative environments, the software offers self-hosted synchronization options and team management capabilities, allowing organizations to maintain full control over their data infrastructure and security policies.
Beyond core note-taking, the application supports rich multimedia content, including embedded files, diagrams, and mathematical expressions. It provides a comprehensive web-clipping tool for archiving online research and a RESTful API that enables programmatic access to notes and metadata for external integrations. The system is built on a cross-platform abstraction layer to ensure consistent behavior across desktop and mobile environments.
Features
- Open Source Note-Taking Suites - A cross-platform software suite for capturing, organizing, and synchronizing personal or professional notes across multiple devices and operating systems.
- Private Knowledge Management Systems - Storing personal or professional information in a secure, self-hosted environment where you maintain full ownership and control over your data.
- End-to-End Encryption - Maintain full control over personal data by using open file formats and securing all information with end-to-end encryption to prevent unauthorized access.
- End-To-End Encryption Layers - Encrypts all user data locally using a master key before transmission to ensure that only the client can decrypt and access information.
- End-To-End Encryption Systems - Create a master key on one device, synchronize the encrypted data, and propagate that key to all other connected devices to secure information.
- Extensible Platforms - A modular environment that supports custom plugins, themes, and external integrations to expand core functionality for diverse user workflows.
- Local-First Storage Engines - Maintains a complete local copy of the user database in a relational format to ensure offline availability and high-performance data retrieval.
- Cross-Device Synchronization Engines - Keeping your notes, documents, and research accessible across multiple computers and mobile devices through automated cloud or local syncing.
- Cloud Synchronization Services - Synchronize notes across multiple devices and operating systems using various cloud storage services to ensure data is accessible from anywhere.
- End-to-End Encryption Providers - A secure information repository that protects user data with client-side encryption to ensure privacy and prevent unauthorized access to stored content.
- Real-time Collaboration - Share notes with others for real-time collaboration or publish individual notes to the internet via public URLs using a cloud-based synchronization service.
- Web Content Archivers - Capturing web pages, emails, and online research into a structured format for offline reading, long-term reference, and future retrieval.
- Multimedia Note Editors - Embed images, videos, PDFs, and audio files, or generate math expressions and diagrams directly within the application interface to build rich multimedia notes.
- Delta-Based Synchronization Engines - Synchronizes data by calculating and transmitting only the specific changes made to individual files between the client and the storage target.
- Self-Hosted Synchronization Services - A private infrastructure option that gives organizations full control over data storage, user management, and security policies for collaborative note-taking.
- Encryption Management - Remove the master key configuration from each device one by one and synchronize the changes to the sync target to turn off end-to-end encryption.
- Productivity Plugin Architectures - Customizing your writing environment with plugins and scripts to integrate specific workflows and automate repetitive note-taking tasks.
- Plugin-Based Architectures - Loads external JavaScript modules at runtime to inject custom features, themes, and UI components into the core application environment.
- Extensibility Frameworks - Install community-developed plugins that add new features, themes, and integrations to the note-taking environment to expand the capabilities of the software.
- Collaborative Documentation Suites - Sharing notebooks and managing user access within an organization to facilitate collective knowledge sharing and team-based project documentation.
- Private Synchronization Servers - Host a private synchronization server on your own infrastructure to maintain full control over data privacy and security within a business environment.
- Browser Web Clippers - Save web pages or take screenshots directly from a browser using a dedicated extension that stores the content as a new note.
- Cross-Platform Abstraction Layers - Wraps native operating system capabilities in a unified layer to maintain consistent application behavior across desktop and mobile environments.
- User Interface Customizations - Extend application functionality with custom plugins, themes, and scripts, or switch between different text editors to suit specific writing preferences.
- RESTful Data Management APIs - Interact with exposed REST methods to manage notes, notebooks, and tags programmatically from external applications or custom scripts.
- RESTful Data Services - A RESTful service layer that allows external applications and custom scripts to interact with and manipulate stored notes and metadata.
- Shared Notebooks - Synchronize notes across multiple devices, publish content to the web, and collaborate on shared notebooks with other users through a managed cloud service.