Viki is a Japanese e-commerce platform that allows users to buy and sell products online. It was launched in 2013 by the Rakuten Group, which owns the popular shopping website Rakuten. Viki offers a wide range of products, including electronics, clothing, accessories, home goods, and more. The platform also features a marketplace where sellers can list their products for sale, and buyers can browse and purchase them directly from the site. Viki has a user-friendly interface and offers various payment options, making it easy for customers to shop online.