website/docs/users-sources/sources/index.md
Sources allow you to connect authentik to an external user directory. Sources can also be used with social login providers such as Facebook, Twitter, or GitHub.
Sources are in the following general categories:
For instructions to add a specific source, refer to the documentation links in the left navigation pane.
To have sources show on the default login screen you will need to add them to the flow. The process below assumes that you have not created or renamed the default stages and flows.
You can bind a policy to a source to control whether or not the users from the source can access an application.
For instructions, refer to Bind a policy to a source.