C# Spreadsheet Software

View 90 business solutions

Browse free open source C# Spreadsheet Software and projects below. Use the toggles on the left to filter open source C# Spreadsheet Software by OS, license, language, programming language, and project status.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
    Start Free
  • 1
    Technical analysis library with indicators like ADX, MACD, RSI, Stochastic, TRIX... includes also candlestick pattern recognition. Useful for trading application developpers using either Excel, .NET, Mono, Java, Perl or C/C++.
    Leader badge
    Downloads: 13,141 This Week
    Last Update:
    See Project
  • 2
    JExcelApi is a java library which provides the ability to read, write, and modify Microsoft Excel spreadsheets. This project mirrors the files on http://www.jexcelapi.org, which has been known to go down on occasion.
    Leader badge
    Downloads: 215 This Week
    Last Update:
    See Project
  • 3
    The project is used to design Excel and HTML report. The new idea it brings to us is that we can develop reports with VBA macros, just as the importance of css to html. And we and change the report without compile the projects...
    Leader badge
    Downloads: 9 This Week
    Last Update:
    See Project
  • 4
    Excel Automation Tool

    Excel Automation Tool

    Perform automatic: compare,copy,delete,merge,format,password removal

    Perform automatic operations between excel files.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 5
    The NExcel library allows a .NET application to read Ms Excel files, compatible with Excel 97 and upper. No need to install Ms Office Excel or any third-party libraries. Based on JExcelAPI by Andrew Khan.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    Excel  AddIn :   In2Sql

    Excel AddIn : In2Sql

    ODBC Cloud SQL Explorer. Connection Manager. Query Editor.

    https://sourceforge.net/projects/in2sql Video for best usage https://rb.gy/tvl8lk This Excel Addin helps SQL analytic create an Excel report based on ODBC relational data. *Creates table base on data from a relational database *Generate a pivot report using the same external connection (1) *Some ad-hoc tools are available - like "keep only" and "remove only" *you can use the row limit option for exploring the largest dataset *The ODBC connection manager is available *auto-build query tool can create SQL select statement by using different database tables with matching them by column name * creating connections for PowerQuery news and updates -- change list -- v05 beta export tables and SQL to CSV files treat CSV like relational tables -- add Cloud ClickHouse Source resolve the problem with an untrusted source changed Sql Editor fixed behavior for "update rows"
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7

    Bill Splitter

    Easily split a bill with multiple people

    Easily split a bill with multiple people while considering who wants each item on the bill! Fully customizable names as well as tax rates, and supports exporting to Microsoft Excel®. Great for pooled groceries etc.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8
    This open source library allows you to display System.Data.DataTable objects in Excel with titles, totals and number formating. It uses Reflection and late-binding, and is therefore compatible with multiple versions of Excel.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    A C#/.Net library for creating powerful reports in Excel from an Excel template. The template can modified by the costumer (just basic Excel skills are needed) so each costumer can influence the design of his reports (e.g. bills).
    Downloads: 1 This Week
    Last Update:
    See Project
  • Picsart Enterprise Background Removal API for Stunning eCommerce Visuals Icon
    Picsart Enterprise Background Removal API for Stunning eCommerce Visuals

    Instantly remove the background from your images in just one click.

    With our Remove Background API tool, you can access the transformative capabilities of automation , which will allow you to turn any photo asset into compelling product imagery. With elevated visuals quality on your digital platforms, you can captivate your audience, and therefore achieve higher engagement and sales.
    Learn More
  • 10
    The software reads XML files with equity stock order details and submits them to the TWS API from Interactive Brokers for execution. The software also visualizes all order status, error messages, and connection status. Also useful for order latency monit
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    QExcel Converter SQL QT4, Import xml excel/openoffice 2003 format, sqlite3 sql text/binary, edit table and export to various Format, Pdf XSL format objects Apache fop JAVA(XSL-FO), XML/XSLT , excel, SQL text sqlite3 dump file and MYSQL SQL to XML/XSL.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13

    The Refresher

    Automatically refresh Excel files with linked server queries.

    The Refresher will automatically open, un-protect, refresh, re-protect, and save multiple Excel files. Great for excel files with linked server queries.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    XSheet is a spreadsheet program with many of the basic spreadsheet features like function plotting, sorting, searching, import/export, formulas and runnable scripts.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    See Sharp Reports is an XML based reporting tool. It is written entirely in C# for the .NET platform. Reports in PDF, XCEL, HTML, RTF formats.Support for ASP.NET to web-enable the reports.Consists of Reporting Engine and a Development GUI tool.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16

    XlsToFormula

    XlsToFormula translates xls files' formulas to binaries/executables.

    XlsToFormula fits a scenario, in financial institutions, where xls files are maintained by financial departments, then comes an software application that needs to make use of that (usually large) xls file. Running Excel on the server side is not a feasible solution. Even Office Web Components is not that efficient handling large files. The solution? XlsToFormula; light, fast and running executable.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Software for Analysis (Audit, Evaluate and Value) of Financial Models, specially created in Spreadsheets.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    Writes and now Reads Excel files quickly and easily, including formatting. Generate Excel files for ASP.NET sites or .NET applications. Doesn't require Excel on the server or any licensing $. Compatible with Excel versions >= 97.
    Downloads: 6 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • Next
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.