Aspose.Cells Cloud REST API supports saving Excel files in various formats using NodeJS and offers SDKs for multiple programming languages....OpenOffice: Ods, Fods, Ots Xml: SpreadsheetML, Xml Text: Csv, Tsv, Txt...OpenOffice: Ods, Fods, Ots Xml: SpreadsheetML, Xml Text: Csv, Tsv, Txt...