Open-source .NET library for creating, reading, modifying, and converting Excel files programmatically, without requiring Microsoft Excel.
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Oct 22, 2026 - C#
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excel-csharp
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Excel VSTO Add-in to build network graphs.
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Jan 18, 2026 - C#
This repository provides a suite of high-performance, thread-safe Excel User Defined Functions (UDFs) developed using the Excel-DNA framework in C#. These functions significantly extend Excel's built-in capabilities for power users and developers, offering tools for advanced calculation control, dynamic data processing, and in-memory storage.
exceldna excel-functions excel-addin excel-formulas excel-udf excel-automation excel-xll spreadsheet-automation excel-csharp
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Jul 24, 2026 - C#
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