6. Wal-Mart Stores Inc. (NYSE:WMT) Alexa Rank -100
Wal-Mart is the world’s largest company by revenue, according to the Fortune Global 500 list in 2016. It operates multinational retail chains in 28 countries. It is also the largest discount store in America. In 2007, Walmart.com launched Site to Store service, enabling customers to make a purchase online and pick up merchandise in stores. In a move to combat peers like Amazon, Wal-Mart.com launched personalized home pages for shoppers, showing them products based on their previous purchases, in 2014. The website offers products in categories like retail, clothing, recreational, home products etc. In a further bid to counter Amazon Prime, Wal-Mart recently announced that it would offer free, 2-day shipping on some of its most popular products sold online, without the need for a membership.