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Lucidspark alternatives · Whiteboards

Open-source alternatives to Lucidspark

Lucidspark 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.

Lucidspark has a free plan. Paid plans start at $9 per month, billed annually. 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 Lucidspark

  1. draw.io

    Free diagram editor that saves files to storage you choose

    • draw.io is free. Lucidspark starts at $9 per month, billed annually.
    • Only draw.io lists macOS, Windows and Linux apps.
    • Only Lucidspark lists iOS and Android apps.
    • draw.io is open source and self-hostable, according to its own site.
    draw.io pricing and details

  2. Excalidraw

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

    • Excalidraw starts at $6 per user / month, billed annually. Lucidspark starts at $9 per month, billed annually.
    • Only Lucidspark lists iOS and Android apps.
    • Excalidraw is open source, self-hostable and end-to-end encrypted, according to its own site.
    • Excalidraw also covers diagrams.
    Excalidraw pricing and details

  3. Freeplane

    Free, open source mind mapping app for the desktop

    • Freeplane is free. Lucidspark starts at $9 per month, billed annually.
    • Only Freeplane lists Windows, macOS and Linux apps.
    • Only Lucidspark lists a web app.
    • Only Lucidspark lists iOS and Android apps.
    Freeplane pricing and details

  4. Flowchart Fun

    Text-based flowchart maker that draws diagrams as you type

    • Flowchart Fun starts at $2 per month (billing basis not stated). Lucidspark starts at $9 per month, billed annually.
    • Only Lucidspark lists iOS and Android apps.
    • Flowchart Fun is open source, according to its own site.
    • Flowchart Fun also covers diagrams.
    Flowchart Fun pricing and details

  5. PlantUML

    Draw UML and other diagrams from plain-text descriptions

    • PlantUML is free. Lucidspark starts at $9 per month, billed annually.
    • Only PlantUML lists a browser extension.
    • Only Lucidspark lists iOS and Android apps.
    • PlantUML is open source, according to its own site.
    PlantUML pricing and details

  6. OpenBoard

    Free open-source interactive whiteboard software for classrooms

    • OpenBoard is free. Lucidspark starts at $9 per month, billed annually.
    • Only OpenBoard lists Windows, macOS and Linux apps.
    • Only Lucidspark lists a web app.
    • Only Lucidspark lists iOS and Android apps.
    OpenBoard pricing and details

Common questions

Is there an open-source alternative to Lucidspark?

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

Is Lucidspark open source?

Lucidspark 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 Lucidspark: the alternatives its listing names first, then the tools that share the most features with it.