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Open Source Mind Maps: Free Tools Compared

See an example map of open source mind mapping tools and their key features. CogniGuide can also build a map from your own notes, PDF or slides.

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CogniGuide at a glance

What you get
Interactive mind maps of the main ideas and how they connect. Free: overview maps (detailed maps on your first 3 creations). Plus: detailed maps with supporting concepts.
Exports
Your first PDF or PNG export is free; Plus exports anytime.
Price
Free plan: 5 creations a week, up to 3 a day. Plus: $9.99/month or $99.90/year (USD; local prices at checkout).
Sign-up
A free account is required before you create anything (Google or email). No credit card.
What you can upload
PDF, Word (.docx), PowerPoint (.pptx), plain text or Markdown, and images (PNG, JPG, WebP, GIF), or type a topic. One file per creation on the free plan; several at once on Plus.

How it compares: vs Knowt · vs Quizlet · vs NotebookLM · vs Mapify

What You Get From a Mind Map

A clear overview of open source mind mapping options, plus a way to build your own map from your material.

Build From Your Own Files

Upload a PDF, Word file, PowerPoint or text file, and the AI turns it into a branching mind map.

Clear Branches to Compare

Each main branch covers one part of the topic, such as licensing, features and platforms, so you can compare options quickly.

Quiz and Export Next

Turn the finished map into a quiz, export it as PNG or PDF, or share a link with others.

How to Make a Mind Map

Start from a file or a topic, then let the AI build the branches for you.

  1. 1

    Add Your Material

    Upload your notes, a PDF or slides, or simply type the topic you want to map.

  2. 2

    AI Builds the Map

    The AI creates a mind map with expandable branches for the main ideas and details.

  3. 3

    Study, Expand and Export

    Expand any node, edit the text, take a quiz, or export the map as PNG or PDF.

Open Source Mind Map Tools Explained

Open source mind map software is released under a license that lets anyone view, modify and redistribute the code. Most tools in this group split into a few clear areas: the editor itself, file formats, export options and the platforms they run on. Mapping these areas makes it easier to compare them against your needs for privacy, cost and customization.

  • Licensing: how freely you can use, change and share the software
  • Editing features: node styling, layouts and keyboard shortcuts
  • File formats: which formats the map can be saved and opened in
  • Export options: PNG, PDF, SVG or other image and document outputs
  • Platforms: desktop, web or self-hosted installation

Use a map like this to compare tools, pick one, and plan your setup. To map your own research or project, CogniGuide can turn your notes into a personalized mind map in minutes.

Explore related topics

mind map softwareMind map software that builds an editable map from your PDF, slides or notes. See an example map and create your own with CogniGuide's free plan.mind maps on MacMind maps for Mac users, with an example map showing how to organize a study topic into branches. Build your own map from notes, a PDF or slides in minutes.mind maps appA mind maps app turns notes, PDFs and slides into a clear branching map you can expand, edit and study from. Create your own map from your files in minutes.open mind map file onlineOpen a mind map file online and view it as an interactive map with expandable branches. Upload your file, then expand, edit and export it in your browser.best mind map software MacBest mind map software for Mac compared by file import, AI mapping, export and quizzes. Plus a sample study map. Build your own map from notes or a PDF.online mind mapsOnline mind maps turn your notes into a visual branch map you can edit and share. Build one from a PDF, document or topic in minutes, free to start.open source concept mapExplore an open source concept map example and learn how to build your own from notes or a PDF.open source mind mapRead how an open source mind map is structured and see a ready example to adapt.

Open Source Mind Map FAQ

Common questions about open source mind mapping tools and building your own map.

What does open source mean for a mind map tool?

Open source means the software's source code is publicly available under a license. You can usually inspect it, modify it, self-host it and share it, depending on the specific license.

Are open source mind map tools always free?

Most are free to download and use, but some projects offer paid hosting, support or premium add-ons. Check the license and pricing of each project before you rely on it.

Which file types can CogniGuide use to build a map?

You can upload PDF, Word (DOCX), PowerPoint (PPTX), text or Markdown files, or images. You can also type a topic directly.

Can I turn a CogniGuide map into a quiz?

Yes. You can turn any map into a quiz to test yourself. The free plan includes 5 creations a week.