Hi ashwinirajp,
AFAIK, there are no ready-made extensions availble for a Wish List. However, it's not too hard to implement:
1. Create a table called WishList with the user ID and a Product ID
2. When adding an item to the list (on a product details page) get the ID from the user (from the Membership user) and insert it in the database together with the product ID.
3. On a Wish List page, select records from the WishList table, JOIN them on the Products table to get product details and filter them on the user's ID.
4. When buying a product, delete the item from the WishList table (or make this optional through a Profile setting).
Hope this gives you some ideas on implementing this feature.
Cheers,
Imar