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Exponential (CMS) · open source since 1999

Try Exponential!

I have been developing software using my own website development framework for over 24 years. Today Exponential (CMS) allows you to create your own website in minutes, and it can support your own custom features as needed.

Give Exponential 6 a try today and you won’t regret it.

Start learning See Exponential Sponsor the Foundation
exponential.earth: the home of the Exponential project, with the administration you get
exponential.earth, the home of the project, and the administration every site gets.

From eZ Publish to Exponential

  1. 1999

    The content management system (CMS) eZ Publish was developed by the Norwegian company eZ Systems and first published in 1999.

  2. Since version 1

    Senior programmer and designer Graham Brookins has worked with the system since version 1 and has carried out many small and large installations. The system is known for being very stable and having a long service life.

  3. eZ Platform

    eZ Systems ended the further development of eZ Publish in favor of its successor, eZ Platform. eZ Platform still has a “legacy mode” in which both the old eZ Publish backend and the new template system can be used.

  4. August 2025

    7x renamed the eZ Publish 6 open source project to “Exponential (CMS)”, to avoid trademark issues with the continued use of the eZ Publish name.

  5. Today

    Exponential 6 is compatible with eZ Publish 3, 4 and 5 and gets regular releases. This very site runs Exponential 6.0.15 on PHP 8.5.

What was eZ Publish? →

doc.exponential.earth: the documentation, with a starting point for every role
doc.exponential.earth: a starting point for every role, from editors to PHP developers.

What 7x does for your Exponential site

We are Exponential (CMS) experts and offer various services.

  • Upgrades

    We can upgrade an old eZ Publish version to the latest stable version of Exponential (CMS). We also provide additional security and kernel fixes. Exponential 6 runs from PHP 7.4 to PHP 8.5.

    Ask for an upgrade →

  • Extensions

    We create extensions for Exponential and integrate them into existing systems. The range goes from cache managers to all kinds of image extensions.

    Have an extension built →

  • Migrations

    Decided to replace your old eZ Publish installation? Exponential 6.x is compatible with eZ Publish 3, 4 and 5, and we can help you move the old content to it.

    Plan a migration →

  • Further development

    We look after several Exponential installations and keep improving the system as we go. Our customers benefit directly from that know-how.

    Work with 7x →

Our recommendation

Rejoice! eZ Publish is no longer developed by the company behind it (now called Ibexa), and there is no need to rush if your system is stable. 7x is building the next versions of Exponential 6 with regular releases and updates, and we expect them to run smoothly for years without changes being required.

Built with Exponential

Some of the sites that run on Exponential today. Each one is a click away.

Also: exponential.earth, 451.ch.

The Exponential family

Learn Exponential: 18 places to start

New to Exponential, or coming from another CMS? The documentation at doc.exponential.earth has a way in for you.

Get involved

Exponential is open source and grows with the people who use it. Pick the way that fits you.

  • Sponsor the Exponential Foundation

    Keep the project, its releases and its documentation going.

    Give Our sponsors

  • Sponsor 7x

    Support the team that builds, releases and documents Exponential.

    Sponsor on GitHub

  • Become an Exponential partner

    Build, host or support Exponential sites for your own customers.

    Partner guide

  • Become a 7x partner

    Resell 7x hosting and services, or work with us on projects.

    7x partner program

  • Buy hosting for Exponential

    Managed hosting tuned for Exponential, from entry level to dedicated.

    Buy hosting Exponential hosting

  • Buy a site design

    A new design for a new site, or a fresh look for the one you have.

    Web design Redesign my site

  • Contribute an extension or a pull request

    Share your extension, fix or feature with everyone who runs Exponential.

    Pull requests How to contribute

  • Open an issue

    Found a bug or have an idea? Tell us on GitHub.

    Issues

  • Hire 7x for feature development

    Get your features built into the Exponential family of open source CMS and DXP products and solutions.

    Feature development Contact 7x