Bolt is a simple CMS written in PHP. It is based on Silex and Symfony components, uses Twig and either SQLite, MySQL or PostgreSQL.
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Sophisticated, lightweight & simple CMS. Homepage:

Bolt is a tool for Content Management, which strives to be as simple and straightforward as possible. It is quick to set up, easy to configure, uses elegant templates, and above all: It's a joy to use. Bolt is created using modern open source libraries, and is best suited to build sites in HTML5 with modern markup.

From a technical perspective: Bolt is written in PHP, and uses either SQLite, MySQL or PostgreSQL as a database. It's built upon the Silex framework together with a number of Symfony components and other libraries. Bolt is released under the open source MIT-license.

Build status, code quality and other badges

Build Status Scrutinizer Continuous Inspections SensioLabsInsight

For continuously inspecting our code, we use Scrutinizer CI. You can find all runs on our code base here.


Detailed instructions can be found in the Installation section in the documentation.


Have a question? Want to chat? Run into a problem?

  • There’s always some people willing to chat in our IRC channel on Freenode at #boltcms. No IRC client? Use our web-based client.
  • We also have a Slack channel at To get in, get yourself an invite at
  • There's a Forum at, where we'll gladly help you sort out problems, or discuss other Bolt-related things.
  • We’re pretty active on Twitter. Follow us, or say hello at @BoltCM.

3rd Party Install Options

Note: These install options are provided by members of the greater Bolt community and are not directly supported by the core developers.

Yeoman Generator


Tighten that Bolt! This generator will set up Bolt for you with a local extension and a feature-packed theme ready for you to make the best website the world has yet seen.

Note: This is not designed to be a "ready-to-deploy" theme. It is designed to be barebones boilerplate so you can get to making what you need to make.

Provided by: Christian Silver

ManageaCloud Deployable Configuration Examples

Distribution Status
CentOS 7 CentOS 7
Debian Jessie Debian Jessie 8.0
Debian Wheezy Debian Wheezy 7.0
Ubuntu Vivid 15.04 Ubuntu Ubuntu Vivid Vervet 15.04
Ubuntu Utopic 14.10 Ubuntu Utopic Unicorn 14.10
Ubuntu Trusty 14.04 Ubuntu Trusty Tahr 14.04

Provided by: Rubén Rubio Rey

Reporting issues

When you run into an issue, be sure to provide some details on the issue. Please include with your report:

  • the (example) input;
  • the output you expected;
  • the output actually produced.

This way we can reproduce your issue, turn it into a test and prevent the issue from occurring in future versions.

Unit tests

For running unit tests you need phpunit.

After installing, you can run the unit test suite by running:

$ phpunit

This can now also be done by using app/nut:

$ php app/nut tests:run

Extensions and Themes

Since Bolt 2.0, you can install extensions and themes directly from Bolt's interface. To browse the available extensions and themes, visit