Composr CMS:
Your Data, Your Privacy, Your Control

Do you need to build a website? Are you tired of being locked down by third-party website builders and software? Composr CMS gives you full control and full autonomy over your website and its data!

The Composr software is Free and Open Source, so anyone can download and use it. Build any website you want, from a simple informational site to a complex eCommerce platform and anything in-between.


What is Composr CMS?

Composr is a very flexible CMS with advanced social, interactive and dynamic functionality.

Hundreds of features and building blocks are available out of the box. You don't need to rely on sketchy and potentially unmaintained third-party addons any longer.

Composr is embraced by a wide variety of industries, from Fortune-100 companies, government agencies, small startups / hobby sites, and much more! We make all the best ideas available to everyone.

Create smarter web properties; accelerate time to market

  • Huge integrated feature-set
  • Supportive community
  • No licensing costs
  • Cloud-compatible
  • Mobile responsive
  • HTML5, CSS3, WCAG

Latest v11 News

Announcements

Stepping down as Composr's lead developer

I (Patrick Schmalstig) will be stepping down as Lead Developer of Composr CMS as of April 1, 2025 (this is not an April Fool's Day joke). Please read more for important information.

Announcements

What happened to compo.sr?

Compo.sr is now read-only, and I am working hard to get composr.app to a state it can accept registrations. Please read more to see what happened and why.

New releases

Composr 11 beta7 released

11 beta7 released. Read the full article for more information, and upgrade information.

Older news

24th Jan 2025, 11:44 AM Free Our Feeds 0 comments
29th Dec 2024, 6:38 PM Telemetry broken until v11 beta7 0 comments
23rd Dec 2024, 6:19 PM Composr 11 beta6 released 0 comments
23rd Nov 2024, 5:23 PM Composr 11 beta5 released 0 comments
16th Oct 2024, 3:08 PM Composr 11 beta4 released 0 comments

Get an Early Preview of Composr CMS v11

Check out these sites running Composr CMS v11 who opted in to be featured:


You can opt-in (or out) to have your v11 site featured when installing (on step 2) or in your configuration in the Admin Zone > Setup > Configuration > Privacy / legal compliance options. See the site showcase for more information.

Remember, version 11 is still in beta. We do not recommend running it in production unless you know what you are doing and are aware of the responsibilities and implications (especially security and stability).