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Mindomo alternatives · Whiteboards

Open-source alternatives to Mindomo

Mindomo is not described as open source on its own site. 6 of the 61 other whiteboard and mind map tools in this directory are open source, according to their own sites.

Mindomo has a free plan. Paid plans start at $7 per month, prepaid yearly. All of them are free or have a free plan.

6 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

How each one differs from Mindomo

  1. Freeplane

    Free, open source mind mapping app for the desktop

    • Freeplane is free. Mindomo starts at $7 per month, prepaid yearly.
    • Only Mindomo lists a web app.
    • Only Mindomo lists iOS and Android apps.
    • Only Mindomo lists a browser extension.
    Freeplane vs MindomoFreeplane pricing and details

  2. draw.io

    Free diagram editor that saves files to storage you choose

    • draw.io is free. Mindomo starts at $7 per month, prepaid yearly.
    • Only Mindomo lists iOS and Android apps.
    • Only Mindomo lists a browser extension.
    • draw.io is open source and self-hostable, according to its own site.
    draw.io pricing and details

  3. Excalidraw

    Open-source whiteboard for hand-drawn style sketches and diagrams

    • Excalidraw starts at $6 per user / month, billed annually. Mindomo starts at $7 per month, prepaid yearly.
    • Only Mindomo lists macOS, Windows, Linux, iOS and Android apps.
    • Only Mindomo lists a browser extension.
    • Excalidraw is open source, self-hostable and end-to-end encrypted, according to its own site.
    Excalidraw pricing and details

  4. PlantUML

    Draw UML and other diagrams from plain-text descriptions

    • PlantUML is free. Mindomo starts at $7 per month, prepaid yearly.
    • Only Mindomo lists macOS, Windows, Linux, iOS and Android apps.
    • PlantUML is open source, according to its own site.
    • PlantUML also covers diagrams.
    PlantUML pricing and details

  5. Flowchart Fun

    Text-based flowchart maker that draws diagrams as you type

    • Flowchart Fun starts at $2 per month (billing basis not stated). Mindomo starts at $7 per month, prepaid yearly.
    • Only Mindomo lists macOS, Windows, Linux, iOS and Android apps.
    • Only Mindomo lists a browser extension.
    • Flowchart Fun is open source, according to its own site.
    Flowchart Fun pricing and details

  6. OpenBoard

    Free open-source interactive whiteboard software for classrooms

    • OpenBoard is free. Mindomo starts at $7 per month, prepaid yearly.
    • Only Mindomo lists a web app.
    • Only Mindomo lists iOS and Android apps.
    • Only Mindomo lists a browser extension.
    OpenBoard pricing and details

Common questions

Is there an open-source alternative to Mindomo?

Yes. Freeplane, draw.io, Excalidraw, PlantUML, Flowchart Fun and OpenBoard are open source, according to their own sites.

Is Mindomo open source?

Mindomo is not described as open source on its own site. The listing was checked on Oct 6, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Mindomo: the alternatives its listing names first, then the tools that share the most features with it.