Wishfinity - All your wishes in a single sharable link
LoveSales - Find and save products you love, get alerted when they go on sale.
Kowa - Organize your wish-lists and items simply.
TrackIf - Alerts you if the price of your favorite products drop
GiftBuster - Wish list registry & shopping list app
Giftwhale - Giftwhale allows you to create personalised wish lists online.