smartxls SXPackage by: smartxls .NET 6.0 .NET Standard 2.0 .NET Framework 2.0 1,342 total downloads last updated 4/8/2024 Latest version: 3.0.9.1 Excel formula calculations XLSX XLSM XLSB CSV c# asp.net .netcore More tags SmartXLS - .Net Excel Library with real time calculation engine.