Vaadin Directory at http://vaadin.com/directory/ provides a rich
collection of add-ons for Vaadin. You can download Directory add-on packages
from the details page of an add-on.
Select the version; some add-ons have several versions available. The latest is shown by default, but you can choose another the version to download from the dropdown menu in the header of the details page.
Click and save the JAR or Zip file on your computer.
If the add-on is packaged in a Zip package, unzip the package and
follow any instructions provided inside the package. Typically,
you just need to copy a JAR file to your web project under the
WEB-INF/lib directory.
Update and recompile your project. In Eclipse, select the project and press F5.
You need to compile the client-side implementations of the add-on components, that is, a widget set. This is the case for majority of add-ons, except for pure server-side, theme, or data binding add-ons. You must recompile the widget set if you install a new version of the add-on or the Vaadin library. See the subsequent sections for detailed instructions for compiling widget sets.
Update the project in web server and possibly restart the server.
After trying out an add-on, you can give some feedback to the author of the add-on by rating the add-on with one to five stars and optionally leaving a comment.
Please note the add-on license. While most commercial add-ons can be downloaded directly, you should note their license and other terms and conditions. Many are offered under a dual licensing agreement so that they can be used in open source projects for free, and many have a trial period for closed-source development.