bitcoin-qt
has the Backup Wallet
option (File
-> Backup Wallet...
).
But apparently there is no way to restore the wallet from a backup file via the GUI.
The only way to do this is to replace the wallet.dat
of a newly created wallet with the backup file, which can hardly be considered an intuitive way.
Maybe it would be interesting to add a Restore Wallet From Backup
option in bitcoin-qt
.