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Home/Categories/Web Development/Sulu
icon of Sulu

Sulu

Open source alternative to Contentful, Adobe Experience Manager and Storyblok

Sulu is an open source enterprise CMS built on Symfony with a headless API, multi-site management, and content workflows. A self-hosted alternative to Contentful; MIT licensed.

1.3K starsPHPMITActive this week
Visit websiteGitHub repo
image of Sulu
Contents
  1. 01Who Sulu is for
  2. 02The problem it solves
  3. 03How it solves it
  4. 04Strengths and trade-offs
  5. 05Tech stack
  6. 06FAQ
  7. 07Similar open-source tools
TL;DR

Sulu is a Symfony-based content management system for multi-lingual, multi-portal websites with an extensible administration interface. It replaces hosted headless CMS tools and proprietary enterprise CMS stacks for PHP teams that want self-hosted content infrastructure. MIT licensed.MIT · PHP · 1.3K stars · Active this week

who it's for

Who Sulu is for#

Agencies building multi-site CMS projects

Use Sulu when client projects need multi-language content, custom structures, and self-hosted control inside a Symfony stack.

Skip if:

Your team wants a no-code website builder or hosted CMS with minimal developer involvement.

PHP teams replacing hosted headless CMS

Use Sulu to keep content modeling and delivery close to an existing Symfony application.

Skip if:

Your frontend team needs a cloud API CMS with managed hosting and marketplace integrations.

the problem

The problem it solves#

Enterprise content projects often need multiple sites, multiple languages, editorial workflows, custom content models, and framework integration. Hosted CMS tools can move quickly at first, but per-seat pricing and API-first architecture may not fit teams already invested in Symfony.

The other risk is integration drag. If the CMS sits outside the application's framework, developers spend time synchronizing auth, templates, routing, deployment, and custom business logic.

how Sulu solves it

How it solves it#

Symfony-based CMS framework

Builds on Symfony, making Sulu a strong fit for PHP teams that want content management inside a familiar framework ecosystem.

Multi-lingual and multi-portal sites

Targets websites that need multiple languages and portals from one CMS foundation, a common requirement for enterprise and agency projects.

Extensible administration interface

Provides an administration UI for managing the content lifecycle while still allowing developers to extend project behavior.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Natural fit for Symfony teamsSulu lets PHP teams reuse Symfony knowledge and application architecture instead of operating a separate cloud CMS as the center of content.
  • Built for complex content propertiesMulti-lingual and multi-portal support makes Sulu more relevant for agencies and enterprise sites than a simple blog CMS.

Trade-offs

  • -Requires Symfony expertiseSulu is best for teams comfortable with PHP and Symfony. JavaScript-only teams may move faster with a hosted headless CMS or a Node-based content tool.
tech stack · detected from GitHub

What it's built on#

Languages
JavaScriptPHP
Frameworks
React
Tooling
Webpack
frequently asked

FAQ#

What is Sulu CMS?

Sulu is an open source PHP content management system based on Symfony for multi-lingual and multi-portal websites.

Who should use Sulu?

Sulu fits Symfony and PHP teams building enterprise content sites, agency projects, and multi-site CMS installations.

Is Sulu a Contentful alternative?

Sulu can replace Contentful for teams that want self-hosted CMS infrastructure and deep Symfony integration. Contentful is faster for teams that want a managed cloud CMS.

also worth a look

Similar open-source tools#

Payload CMS

Payload CMS

Build code-first CMS backends with TypeScript schemas, API access,

42.4KTypeScriptMIT
Drupal

Drupal

Open source CMS for enterprise and complex digital experiences

4.3KPHP
Craft CMS

Craft CMS

Flexible developer-friendly CMS for content teams

3.6KPHP
TinaCMS

TinaCMS

Open source headless CMS with inline editing and Git backend

13.4KTypeScriptApache-2.0
Grav

Grav

Flat-file CMS for fast, self-hosted websites.

15.5KPHPMIT
Puck

Puck

Open source drag-and-drop page editor for any React app

12.7KTypeScriptMIT

Repository

Stars
1.3K
Forks
357
License
MIT
Latest
3.0.7
Last commit
4 days ago
Last verified
May 29, 2026
Repo
sulu/sulu ↗

Additional details

Language
PHP
Open issues
573
Contributors
236
First release
2013

Categories

Web DevelopmentDeveloper ToolsProduct & Project Management

Tags

CMSHeadless CMSDeveloper FrameworkAPI Development ToolsSelf HostedOpen CoreWorkflow Automation