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 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 expressionengine.com 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 7.2 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

If downloading from expressionengine.com

  1. Create a database
  2. Unzip download and upload the files to your site's root directory
  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.

If you're installing from the repository:

  1. Create a database
  2. Clone repo into your site's root directory or clone locally and upload files.
  3. Run composer install
  4. Verify file permissions
  5. add an empty config file, e.g. touch system/user/config/config.php
  6. 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.
  7. Point your browser to /admin.php and run the Installation Wizard.

Finding Previous Versions

To install/download previous versions of ExpressionEngine navigate to Releases and download the Source Code (.zip or .tar.gz) from the from the release you wish to download.

Note: You may need to follow the instructions above, "If you're installing from the repository", after downloading.

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 CONTRIBUTING.md in the root of this repository to get started!

Copyright / License Notice

The ExpressionEngine project is copyright (c) 2003-2022 Packet Tide, LLC (https://packettide.com) 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 Packet Tide, LLC. in the United States and around the world. Refer to ExpressionEngines's Trademark Use Policy for access to logos and acceptable use.

Contributors

robinsowell
gaker
intoeetive
quinnchr
matthewjohns0n
Yulyaswan
obfuscode
bryannielsen
TomJaeger
aarongustafson
robsonsobral
ajohnson
dougblackjr
mithra62
ops-andy
rsanchez
bakin1999
geoffcowan
litzinger
jcogs-design
leevigraham
gilbert-hop
johnfuller
dependabot[bot]
xhezairbey
CreepCaster
Caleydon
jHards
adrienne
bmackenty
danielpunkass
HopStudios-Development
jackmcdade
jeremyworboys
Jordan-Ellis
kylecotter
stephengalbraith
zdehkordi
zaasman
acalvino4
jamesseavers
igreil
mcfarlandonline
garethtdavies
JayGreentree
iammattmartin
inconsiderate
reinos
rhynodesigns
tknaller
murtaugh