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Mavo

by Mavo

Free plan Self-hostedWeb

Visit Mavo Alternatives Pricing

Mavo's own site

What Mavo is

Mavo is a free, open-source tool founded in 2017 for turning HTML into web applications that manage, store and transform data. Authors can create reactive apps with HTML and CSS without writing JavaScript or running a server backend. Mavo generates an editable interface on the website, which authors can customize. An HTML attribute controls whether data is stored in the cloud, locally or not at all. Multimedia can be uploaded by dragging, pasting or browsing, and Mavo expressions perform calculations that update when needed. Apps are keyboard accessible and screen-reader friendly by default. Plugins can change nearly every part of the tool and add functions; GitHub and Dropbox are credited as remote storage backends. Mavo runs on the web and can be self-hosted, with API integrations available. Setup requires adding its CSS and JavaScript files to a page, using hosted or local files. The maker calls it mature beta and recommends thorough testing before production use.

Who it suits

It suits people building data-focused web apps with HTML and CSS instead of JavaScript or a server backend. Self-hosting, local storage choices and plugins help authors who want control over deployment and behavior.

What it does well

  • Free and open source
  • No-code HTML and CSS authoring
  • Cloud, local or no storage
  • Keyboard and screen-reader accessible
  • Plugin extensibility

What to know first

  • No mobile publishing
  • No built-in database
  • Mature beta status
  • API reference is incomplete

Plans

PlanBilled and limitsPrice
Free and Open SourceMonetization is not among our prioritiesFree

As mavo.io lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

Mavo adds data management, editing and calculations to HTML while keeping authoring centered on markup and styles. Its mature-beta status and incomplete low-level API call for care before production deployment.

Facts from Mavo's own pages

Accessibility
Mavo apps are keyboard accessible and screen reader friendly out of the box. · mavo.io, 12 Oct 2026
API
The JavaScript API reference is low-level, intended for plugin developers and contributors, and marked as incomplete work in progress. · mavo.io, 12 Oct 2026
API integrations
Yes · mavo.io, 22 Sept 2026
App types
web · mavo.io, 22 Sept 2026
Built-in database
No · mavo.io, 22 Sept 2026
Calculations
Mavo expressions support calculations in HTML that update when needed. · mavo.io, 12 Oct 2026
Editing
Users can edit data directly on a website through an automatically generated, customizable interface. · mavo.io, 12 Oct 2026
Extensibility
Mavo plugins can change nearly every aspect of its behavior and add functionality. · mavo.io, 12 Oct 2026
Founded
2017 · mavo.io, 28 Sept 2026
Free plan
Yes · mavo.io, 22 Sept 2026
Integrations
Mavo credits GitHub and Dropbox as remote storage backends. · mavo.io, 12 Oct 2026
Maturity
The maker describes Mavo as being in mature beta and recommends thorough testing before production use. · mavo.io, 12 Oct 2026
Mobile publishing
No · mavo.io, 22 Sept 2026
No-code authoring
Mavo lets people create reactive web applications with HTML and CSS without writing JavaScript or using a server backend. · mavo.io, 12 Oct 2026
Privacy
Mavo's privacy policy says its website log files may collect IP addresses, browser type, ISP, timestamps, referring and exit pages, and click counts. · mavo.io, 12 Oct 2026
Purpose
Mavo extends HTML to create web applications that manage, store, and transform data. · mavo.io, 12 Oct 2026
Setup
To use Mavo, include both its CSS and JavaScript files in a web page; the site offers files that can be downloaded locally. · mavo.io, 12 Oct 2026
Storage
Mavo can store data in the cloud, locally, or not at all, depending on an HTML attribute. · mavo.io, 12 Oct 2026
Uploads
Mavo supports multimedia uploads by dragging and dropping, pasting, or browsing. · mavo.io, 12 Oct 2026
User authentication
Yes · mavo.io, 22 Sept 2026
Versioning
For a site handoff, the maker recommends using a specific Mavo version or local files. · mavo.io, 12 Oct 2026

Where Mavo stands on Freedom251

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