Best replacement for Amazon Wishlist that I've found since they started making it hard to add non-amazon stuff. This plugin and the phone app make it very convenient to add items to my Birthday and Holiday gift lists.

Giftster is an adequate replacement for Amazon Lists, though the extension is not as feature-rich as Amazon Helper. The "auto image select" feature pulls the wrong image more often than not and there is no way to manually select images from what it finds on a page. (You can change the image on their website, but even that is cumbersome.) Also, there is no way to create a new list from the extension.