34. Xunlei Network Technologies is worth $1 billion.

Xunlei Network Technologies, backed in part by Google, is one of the largest peer-to-peer file-sharing services.

Founded in 2003, Xunlei has raised $111 million to date and is worth $1 billion.

Investors: Ceyuan Ventures, Fidelity Growth Partners Asia, Google, IDG Capital Partners, Morningside Group, Primavera Capital Group, RW Investments.