Which program is typically limited to one user at a time?

The program that is typically limited to one user at a time is the spreadsheet application. Spreadsheets, such as Microsoft Excel or Google Sheets in some configurations, are often designed for single-user access for various tasks, including calculations, data organization, and basic data analysis. This focus on a single-user experience allows for ease of use and simplicity in managing data.

While some spreadsheet applications have begun to incorporate collaboration features that allow multiple users to view or edit documents simultaneously, traditional usage and many standalone versions still primarily operate in a single-user context. This is in contrast to databases, which are explicitly designed to support multiple users concurrently, enabling simultaneous access and manipulation of data. Query languages and visualization tools typically interact with databases or datasets, which are also capable of handling multiple users at once. Thus, a spreadsheet is the most accurate choice as it usually reflects a more limited access framework.