Sonar provides several features for reporting:
Data can be extracted from Sonar to feed external tools or reports. This is done through a series of Web Services.
Here are some examples to extract data with Excel.
Custom dashboards enable to choose the data to display in Sonar.
First they should be configured:

Example of global dashboard:

Example of project dashboard:

The Report plugin (commercial) enables to send by email a custom dashboard as a PDF.