Top 20 NuGet ecommerce Packages

Stone Gateway Client
Boleto Bradesco Shop Facil
Kentico.Ecommerce contains API for product management, shopping cart manipulation, and other functionality needed to create and run on-line stores in web applications that access Kentico externally.
Ucommerce for Kentico
The models library used to the notification ECommerce Event platform
.NET SDK implementing Worldpay eCommerce Chargeback API