sumoffice SumOffice by: sumoffice .NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 161 total downloads last updated 10/3/2026 Latest version: 2026.4.5 xlsx docx pptx excel word powerpoint office spreadsheet Create and edit XLSX, DOCX and PPTX without Office; use the server to show them to people.