Export/Import Bulk Product are extension easy used from beginner to expert. The extension could export/import: Configurable Product, Grouped Product, Bundle Product, Downloadable Product, Tier Price, Group Price, Product Tags, Related Products, Up-sells, Cross-sells and Gallery Images. Also, you can use SSH or CRON for export/import.
In magento, we have extension wishlist. It accept customer add an product to wishlist with an account. Guest Wishlist have feature same wishlist default. But it accept customer use without account and support ajax.
The First Data Global Gateway e4 web service API is a web service that allows third-party applications to process transactions through the Global Gateway e4 system. Therefore we was create extension use on magento. It will help you have more selection payment on your site.