Another name for a software system is a software platform. This term emphasizes the foundational nature of the system, which serves as a base upon which other applications, tools, or services can be built or run. A software platform typically includes an operating system, development frameworks, libraries, and other components that enable the creation and execution of software applications.

Other terms that can be used interchangeably with "software system" include:

1. Software Suite: Refers to a collection of related software programs or applications bundled together to provide a comprehensive solution for specific tasks or industries. For example, Microsoft Office is a software suite that includes Word, Excel, and PowerPoint.

2. Software Stack: This term is often used in the context of web development or enterprise systems. It refers to a combination of software layers or components that work together to deliver a complete solution. Examples include the LAMP stack (Linux, Apache, MySQL, PHP) or the MEAN stack (MongoDB, Express.js, Angular, Node.js).

3. Software Ecosystem: This term highlights the interconnectedness of various software components, tools, and services that work together to achieve a common goal. For example, the Android ecosystem includes the operating system, app store, developer tools, and third-party apps.

4. Software Framework: A framework provides a structured environment for developing software applications. It often includes pre-built components, libraries, and tools that simplify the development process. Examples include Django for web development or TensorFlow for machine learning.

5. Software Infrastructure: This term refers to the underlying systems and tools that support the development, deployment, and operation of software applications. It includes servers, databases, networking tools, and other resources.

6. Software Application: While this term is more specific, it can sometimes be used to describe a software system, especially when the system is designed to perform a particular function or set of functions. For example, a customer relationship management (CRM) system is a software application.

7. Software Solution: This term is often used in business contexts to describe a software system that addresses a specific problem or need. For example, an enterprise resource planning (ERP) system is a software solution for managing business processes.

8. Software Product: This term is used when referring to a software system that is developed and sold as a commercial offering. Examples include Adobe Photoshop or Salesforce.

Each of these terms highlights a different aspect of a software system, depending on its purpose, structure, or context of use. However, they all refer to a collection of software components designed to work together to achieve specific goals.