Top 23 C# Excel Projects

Excel

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1. NPOI

   1 16 5,966 9.5 C#

   a .NET library that can read/write Office formats without Microsoft Office installed. No COM+, no interop.

   

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. ClosedXML

   2 29 5,140 9.7 C#

   ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.

   

   Project mention: Automatizando a criação de planilhas com .NET | dev.to | 2025-02-09

4. ExcelDataReader

   3 11 4,181 7.8 C#

   Lightweight and fast library written in C# for reading Microsoft Excel files

   

5. MiniExcel

   4 1 3,114 9.2 C#

   Fast, Low-Memory, Easy Excel .NET helper to import/export/template spreadsheet (support Linux, Mac)

   

6. Magicodes.IE

   5 0 2,175 5.3 C#

   Import and export general library, support Dto import and export, template export, fancy export and dynamic export, support Excel, Csv, Word, Pdf and Html.

   

7. EvilClippy

   6 2 2,156 0.0 C#

   A cross-platform assistant for creating malicious MS Office documents. Can hide VBA macros, stomp VBA code (via P-Code) and confuse macro analysis tools. Runs on Linux, OSX and Windows.

   

8. EPPlus

   7 16 1,932 9.7 C#

   EPPlus-Excel spreadsheets for .NET (by EPPlusSoftware)

   

9. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. ReoGrid

    8 2 1,480 7.3 C#

    Fast and powerful .NET spreadsheet component, support data format, freeze, outline, formula calculation, chart, script execution and etc. Compatible with Excel 2007 (.xlsx) format and working on .NET 3.5 (or client profile), WPF and Android platform.

    

11. ExcelDna

    9 11 1,379 8.8 C#

    Excel-DNA - Free and easy .NET for Excel. This repository contains the core Excel-DNA library.

    

12. Unity-QuickSheet

    10 1 1,066 0.0 C#

    Unity-QuickSheet enables you to use spreadsheet file data within Unity editor.

    

13. ExcelMapper

    11 4 855 6.5 C#

    An Excel to object mapper. Maps POCOs to and from Excel. Configuration via convention, attributes, or fluent methods.

    

    Project mention: .NET: Integration Test for uploading csv/excel file via HttpClient | dev.to | 2025-02-07

    ExcelMapper for working with Excel file

14. NetOffice

    12 1 733 7.1 C#

    🌌 Create add-ins and automation code for Microsoft Office applications.

    

15. Npoi.Mapper

    13 2 621 4.2 C#

    Use this tool to import or export data with Excel file. The tool is a convention based mapper between strong typed object and Excel data via NPOI.

    

16. sqlnotebook

    14 1 611 8.3 C#

    SQL Notebook — Casual data exploration in SQL

    

17. ClosedXML.Report

    15 2 581 4.8 C#

    ClosedXML.Report is a tool for report generation with which you can easily export any data from your .NET classes to Excel using a XLSX-template.

    

18. office-ribbonx-editor

    16 17 563 0.0 C#

    An overhauled fork of the original Custom UI Editor for Microsoft Office, built with WPF

    

19. BakingSheet

    17 10 390 7.0 C#

    Easy datasheet management for C# and Unity. Supports Excel, Google Sheet, JSON and CSV format.

    

20. BlazorDatasheet

    18 2 310 9.7 C#

    Simple excel-like datasheet Blazor component

    

21. Sylvan.Data.Excel

    19 12 276 5.9 C#

    The fastest .NET library for reading Excel data files.

    

22. PowerQueryNet

    20 2 197 10.0 C#

    Run M Language (Power Query Formula Language) from anywhere.

    

23. FileContextCore

    21 1 172 10.0 C#

    FileContextCore is a "Database"-Provider for Entity Framework Core and adds the ability to store information in files instead of being limited to databases.

    

24. BulkPDF

    22 1 133 0.0 C#

    BulkPDF is a free and easy to use open source software, which allows to automatically fill an existing PDF form with differen values. Only a spreadsheet (Microsoft Excel 2007/2010/2013, LibreOffice or OpenOffice Calc) with the desired values is required.

    

25. BookFx

    23 0 109 0.0 C#

    Composing Excel spreadsheets based on a tree of nested components like the HTML DOM.

    

26. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

C# Excel related posts

• Automatizando a criação de planilhas com .NET

  1 project | dev.to | 9 Feb 2025

• .NET: Integration Test for uploading csv/excel file via HttpClient

  4 projects | dev.to | 7 Feb 2025

• Step-by-Step Guide: Easy Reporting with ClosedXML and Views

  1 project | dev.to | 26 Nov 2024

• ClosedXML y el uso de plantillas

  1 project | dev.to | 21 Jun 2024

• My Animal Mart (Part 2) - The data config problem.

  1 project | dev.to | 12 Jun 2024

• C# Excel read/write on the cheap

  3 projects | dev.to | 27 May 2024

• When XML in Word Became Illegal

  2 projects | news.ycombinator.com | 12 Oct 2023
• A note from our sponsor - InfluxDB
  www.influxdata.com | 23 Jun 2025

  InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →

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