Symantec Corporation /sɪˈmænˌtɛk/ (commonly known as Symantec) is an American software company headquartered in Mountain View, California, United States. The company produces software for security, storage, backup and availability – and offers professional services to support its software. Netcraft assesses Symantec (including subsidiaries) as the most-used certification authority. Symantec is a Fortune 500 company and a member of the S&P 500 stock-market index. The company also has development centers in Pune, Chennai and Bengaluru (India).