In Sweden for example, you can't release something into the public domain.
There is also another problem, you can't disclaim some warranties for customers. So if you could release the software into the public domain, you could still be held accountable for what the software did after being modified.
Most of the servers are also located in the UK AFAIK and the first 30 seconds are always streamed from their servers. Managing demand could be a reason.
Dropbox with a Keepass file on it. Accessible from all types of machines and phones I use, very handy (Windows computer, Linux Computer, Android Phone)