Prewritten sets of software designed to fulfill specific functions are known as what?

The term that describes prewritten sets of software designed to fulfill specific functions is "software packages." These packages are typically developed to address particular needs in various sectors, such as business, education, or entertainment. They come ready to be installed and used, which allows users to leverage their functionalities without needing to create software from scratch. This can include applications for word processing, accounting, or database management, among others.

Software packages are often designed with a user-friendly interface, making them accessible for individuals and organizations who may not have extensive technical expertise. They also usually come with built-in support and documentation to aid users in getting the most out of the software.

On the other hand, mashups involve combining different applications or data sources to create new services, "outsourced" refers to the practice of assigning tasks to external service providers, and "open source" pertains to software that is made available for anyone to use, modify, or distribute freely. These other terms do not accurately capture the concept of prewritten software designed for specific tasks, which is why software packages is the best answer.