IBM. the world's largest information technology and business solutions company.

Oracle. The world's largest enterprise software company, specializing in database software.

Microsoft. American multinational technology company and the world leader in software development for personal computers.

Accenture. The world's largest multinational company in management consulting, information technology and business process outsourcing.

SAP. Germany's world-leading provider of user and server-based business applications.

Hewlett-Packard. A global information technology company specializing in printers, digital imaging, software, and computer and information services.

Yahoo. The world-famous Internet portal in the United States, one of the creators of the Internet miracle at the end of the 20th century.

VMware: A company that develops and sells various types of computer virtualization software.

Salesforce: A company that supplies customer relationship management (CRM) software.

The above are just some of the large software companies, and there are many others, such as Adobe, Cisco, Google, and so on, which are globally recognized software companies.