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FeatherBB is an open source forum application released under the GNU General Public Licence.

It is a fork of FluxBB 1.5 based on Slim Framework and designed to be simple and very lightweight.


  • Clear cut MVC architecture
  • Object-oriented
  • Extensible in a single click
  • Easy installation and usage
  • Open-source
  • Responsive design
  • SEO friendly


  • A web server: Apache (with mod_rewrite), Nginx, or Lighttpd
  • A database server: MySQL 5.5+, MariaDB 10+, PostgreSQL 7+ or SQLite 2+
  • PHP 5.5+


  • Make use of a PHP accelerator such as OPCache
  • Make sure PHP has the zlib module installed to allow FeatherBB to gzip output


Two methods are available. First, you can use composer:

composer composer create-project featherbb/featherbb --stability=dev

Or you can simply download the archive from GitHub, unzip it and follow the instructions.

To enable URL rewriting, make sure that mod_rewrite is enabled for Apache, or add the following in your Nginx configuration:

location / {
        try_files $uri $uri/ /index.php$is_args$args;

Do not forget to make the .env unreadable:

location ~ /\.env {
        deny  all;

For Lighttpd, add the following line:

url.rewrite-if-not-file = ("(.*)" => "/index.php/$0")

If you use PHP >= 7, make sure the php7.0-xml is installed by running

sudo apt-get install php7.0-xml

If you have any trouble setting up your server, you can refer to Slim Framework’s documentation.

Core Team

Live Support

You can ask our developers directly in case of trouble: use our Gitter chat.


If you want to contribute, please do not hesitate! Head over to our Github repository and start submitting issues and pull requests.