= Customize

Decidim is multiple things:

* A command-line utility, which can create an application
* A set of libraries, that the application can use

Most of the time, you should work with the generated application. That application (development_app on this docs) should be named as your project, for instance for Barcelona City Council is `DecidimBarcelona`, so for creating it should be:

[source,console]
----
decidim DecidimBarcelona
----

Inside of your application you can customize it in different ways:

* xref:customize:authorizations.adoc[Authorizations]
* xref:customize:code.adoc[Code]
* xref:customize:gemfile.adoc[Gemfile]
* xref:customize:images.adoc[Images]
* xref:customize:javascript.adoc[Javascript]
* xref:customize:menu.adoc[Menu]
* xref:customize:oauth.adoc[OAuth]
* xref:customize:styles.adoc[Styles]
* xref:customize:texts.adoc[Texts]
* xref:customize:users_registration_mode.adoc[User registration mode]
* xref:customize:views.adoc[Views]