Reporting - Export table data to excel or pdf

Flow
1

Hi,
what reporting libraries do you use for exporting table data to excel or saving as pdf.
Do you know alternatives to JasperReports?

Kind regards,
Armin

2

Have you tried any of the
add-ons in vaadin directory
?

Take a looks at
https://vaadin.com/directory#!addon/exporter
 , it seems to be using itext for PDF and POI for excel.