Open Source Microsoft OneNote Alternatives

A curated collection of the 2 best open source alternatives to Microsoft OneNote.

AppFlowy stands out as the best open source alternative to Microsoft OneNote. If it doesn’t meet your needs, don’t worry, — we’ve put together a ranked list of other open source Microsoft OneNote alternatives to help you find the right fit. Other interesting open source alternative to Microsoft OneNote is Affine.

Microsoft OneNote alternatives are mainly Note Taking but may also be Project Management or Task Management. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Microsoft OneNote.

An open-source alternative to Notion, offering a productivity platform designed for managing projects, tasks, and knowledge bases.

Screenshot of AppFlowy website

AppFlowy is a customizable, privacy-focused project management and collaboration platform. It empowers teams and individuals to manage tasks, wikis, and projects while retaining full control of their data. Ideal for users seeking flexibility, privacy, and powerful AI-enhanced productivity tools.

Key benefits of AppFlowy include:

  • Privacy-first approach: Run AppFlowy locally or self-host to ensure complete control over your data, free from vendor lock-in.
  • AI-powered productivity: Utilize AI for generating insights, automating tasks, and improving writing.
  • Customizable and flexible: Design workflows with custom views, themes, and properties to suit unique team needs.
  • Cross-platform accessibility: Seamlessly transition between devices with mobile and desktop support.
  • Community-driven innovation: Access plugins, templates, and contributions from a global developer community.
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An open-source, all-in-one productivity platform that combines documents, whiteboards, and databases into a unified workspace.

Screenshot of Affine website

AFFiNE is an open-source, privacy-first KnowledgeOS that seamlessly combines documents, whiteboards, and databases into a unified workspace. Designed for individuals and teams, it offers a flexible platform to write, draw, and plan, enhancing productivity and creativity.

Key benefits of AFFiNE include:

  • Unified Workspace: Integrates docs, whiteboards, and databases, allowing seamless transitions between writing, visualizing, and organizing tasks.

  • Block-Based Architecture: Enables dynamic content creation with reusable, linkable blocks, facilitating efficient knowledge management.

  • Privacy-Focused & Open-Source: Offers self-hosting options and local-first data storage, ensuring complete control over your information.

  • Cross-Platform Compatibility: Built with web technologies, AFFiNE runs smoothly on Windows, macOS, and Linux, providing a consistent experience across devices.

  • Flexible Views & Real-Time Collaboration: Supports multiple views like Kanban and whiteboard modes, with real-time syncing for collaborative work.

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