5 Most Valuable Internet Companies in the World Market cap: $632.3 billion Chinese e-commerce company Alibaba Group ranks 5th on the list of 15 most valuable internet companies in the world. Aside from operating its Core Commerce business, the company also engages in cloud computing, digital media and entertainment, and innovation initiatives, and others. Alibaba recently invested $750 million in Nice Tuan, a Chinese grocery app, to expand its grocery segment. In the third quarter of 2021, the company’s Core Commerce revenue came in at $30 billion while Alibaba Cloud reached $2.4 billi...