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ExpressionEngine is a flexible, feature-rich, free open-source content management platform that empowers hundreds of thousands of individuals and organizations around the world to easily manage their web site.
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ExpressionEngine Logo

ExpressionEngine CMS

ExpressionEngine is a mature, flexible, secure, free open-source content management system. It is beloved by designers for giving them complete control of all output, and by content authors for enabling reusable, high-performing content. With ExpressionEngine, you can build full-featured websites, create a web app, or serve content to mobile applications. All without requiring complex programming skills.

Visit to see what it's all about or, if you prefer, download a ZIP and jump right in!

System Requirements

ExpressionEngine requires a web server running PHP & MySQL. We recommend:

  • PHP 7 or newer
  • MySQL 5.6 or newer

ExpressionEngine can run on PHP 5.6+ and MySQL 5.5.3+. For full details and a server compatibility wizard, please visit the system requirements in the User Guide.

How To Install

  1. Create a database
  2. Upload the files
  3. Verify file permissions
  4. Point your browser to /admin.php and run the Installation Wizard.

Read Installing ExpressionEngine in the User Guide for full instructions, tips, and post-install best practices.

Note: If you're installing from the repository, you will also need to:

  • add an empty config file, e.g. touch system/user/config/config.php
  • route requests to the installer app instead of the main app by changing EE_INSTALL_MODE to TRUE in .env.php. You can change this back when you're done.

How to Get Started

ExpressionEngine separates your content from your design, enabling you to make small or large changes to your website with ease. Your content is stored in Channels, and your design is kept in Templates, both of which are entirely under your control. ExpressionEngine bends to your needs, not the other way around like many other CMSes.

If you're new to ExpressionEngine, check out:

How to Contribute

There are many ways you get get involved and contribute to the ExpressionEngine application and it's amazing community. Check out in the root of this repository to get started!

Copyright / License Notice

The ExpressionEngine project is copyright (c) 2003-2019 EllisLab, Inc ( and is licensed under Apache License, Version 2.0. This project contains subcomponents with separate copyright and license terms, all of which are fully FOSS and compatible with Apache-2.0.

Complete license terms and copyright information can be found in LICENSE.txt in the root of this repository.

"ExpressionEngine" is a registered trademark of EllisLab Corp. in the United States and around the world. Refer to EllisLab's Trademark Use Policy for access to logos and acceptable use.


The community powered EE CONF is coming to Minneapolis October 2-4. The conference features two days of top-notch speakers in two tracks plus four optional hands-on workshops. For more information visit

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