The organisers of the popular MacHeist event have put together a special deal for Christmas, the Mac Giving Tree.

Mac Giving Tree is offering a range of free software applications to Mac users who sign-up for news and information on software from third party developers. Users who do sign-up will immediately receive free software: Ambrosia Software's, WireTap Pro.

Mac users signing-up will also receive a free shopping list application (Santa's Gizmo) and a secure encryption application called BitClamp.

The Mac Giving Tree offer will run until midnight on Christmas Eve, "when the presents will be unwrapped," the organisers promise.