Donations are what keeps XY Family Tree going. Without the occasional stimulus of small donations from those folk generous enough to make them there would be little incentive to keep this software in the public domain. As well as the thousands of hours it has already taken to develop XY Family Tree there is also the cost of hosting the site on the Internet and the ongoing work to keep abreast of changes.
It might seem a bit of a cheek to offer free software and then ask for some cash to allow extra features but as XY Family Tree is not a big corporation making money on the back of some other product, and as XY Family Tree does not attempt to make any money by troubling you with advertisements, and as XY Family Tree does not sell email addresses, there are lots of advantages to users but none to me. So a small contribution seems a quite reasonable ask.
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