Kingsoft Spreadsheets File (.et)
The ET file extension is associated with Kingsoft Spreadsheets, part of the WPS Office suite. It is used to store and organize financial data, such as balance sheets, expense statements, and invoices, in a format of rows and columns. The ET file supports formulas and charts, and it can be converted to more common formats like XLS or XLSX. The WPS Office suite, similar to Microsoft Office, offers tools for word processing, spreadsheets, and presentations.