Uniform Office Spreadsheet (.uos)

The UOS format which stands for Uniform Office Spreadsheet, is the native file format used by the spreadsheet module of the Uniform Office Format (UOF), an open standard for office applications. This format was developed in China as an open standard for office applications. It uses XML and compression to save spreadsheets, making it similar to but not compatible with other standards such as Microsoft Office Open XML (XLSX) and OASIS OpenDocument (ODS[./ods]).