Netcraft is an Internet services company based in Bath, England. Netcraft is funded through retained profit and derives its revenue in the following ways: Providing network security services, including application testing and automated penetration testing. Providing research data and analysis on many aspects of the Internet. Netcraft has explored the Internet since 1995 and is a respected authority on the market share of web servers, operating systems, hosting providers, ISPs, encrypted transactions, electronic commerce, scripting languages and content technologies on the Internet. For more information, please see the FAQ section titled "Who are Netcraft?".

Netcraft is an Internet monitoring company based in Bath, England.