WishPanel is your online wish list
This is the free Version of WishPanel
This version has some limitations, but try it out and if you like it, you can buy the full version.
WishPanel is also available as a website on http://www.wishpanel.com. Here you can also access your wish list using the same username / password as in the App.
If someone in your family does not have a smartphone, they can instead use the website. In that way, the whole family can participate.