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.

Bitdeli Badge Gitter Piwik


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

Try bolt in Ubuntu, CentOS, Debian or Amazon Linux.

Deployable configuration examples for Ubuntu, CentOS, Debian and Amazon Linux

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