You can support the KeePassX Project by making a monetary donation.

That said KeePassX is a completely free and open-source application. It’s licensed under the GPL and it will remain so in the future.
You do not have to pay anything for downloading and using it. However any donation is appreciated!

There are several ways to send a donation:

  • Donation via PayPal in Euro
  • Donation via PayPal in US Dollar