Microsoft Visio alternatives

Open-source alternatives

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  draw.io

  Fit: PartialCore overlap exists; named gaps need replacing or rebuilding.Fit is not feature parity. A Tier ANo paid feature gates in the self-run edition Apache License 2.0 A permissive license whose main conditions require preservation of copyright and license notices. Contributors provide an express grant of patent rights. Licensed works, modifications, and larger works may be distributed under different terms and without source code. May Commercial useModificationDistributionPatent usePrivate use Must License and copyright noticeState changes No Trademark useLiabilityWarranty Summary from GitHub's choosealicense.com Self-hostable: yesYou can run it on your own server.

  Imports .vsdx and supported older .vsd/.vst and stencil formats. .vdx/.vsx need conversion in Visio first. Test fidelity; no editable Visio round-trip, data-link or Microsoft workflow parity asserted.

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  Mermaid

  Fit: Different approachSolves the same job differently; plan a redesign, not a copy.Fit is not feature parity. A Tier ANo paid feature gates in the self-run edition MIT License A short and simple permissive license with conditions only requiring preservation of copyright and license notices. Licensed works, modifications, and larger works may be distributed under different terms and without source code. May Commercial useModificationDistributionPrivate use Must License and copyright notice No LiabilityWarranty Summary from GitHub's choosealicense.com Self-hostable: noNot offered as software you run yourself.

  Re-author supported technical and process diagrams as Markdown-inspired text in documentation or a website. Library does not supply a Visio-compatible desktop suite or collaboration server. No Visio import/export round-trip asserted.