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

  • Papirfly: Best user-friendly DAM and Content Creation Software Icon
    Papirfly: Best user-friendly DAM and Content Creation Software

    The #1 solution to create and manage content. On‑brand. At scale.

    Papirfly provides a single online destination for all your employees and other stakeholders who are engaging with your brand, ensuring consistency in all aspects of their communications. Teams can produce infinite studio-standard marketing materials from bespoke templates, store, share and adapt them for their own markets and stay firmly educated on the brand’s purpose, guidelines and evolution – with no specialist skills or agency help necessary.
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  • Complete Data Management for Nonprofits Icon
    Complete Data Management for Nonprofits

    Designed to fit with multi-level non-profit organization, across any sector

    NewOrg is a robust platform built with enhanced features to help non-profit organizations that capture and integrate the information from all of their operational areas to better manage volunteers, clients, programs, outcome reporting, activity sign-ups & scheduling, communications, surveys, fundraising activities and Development campaigns. NewOrg can truly deliver an intuitive product that will help manage your Committees, Donors, Events, and Memberships so that the organization runs efficiently.
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  • 1
    ASP.NET session state provider for MySQL
    This project contains an ASP.NET session state store provider for MySQL.
    Downloads: 0 This Week
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  • 2
    ActFX is a 3D engine written in C # using XNA and Framework.NET ActFX è un 3D engine scritto in C# utilizzando XNA e il Framework.NET
    Downloads: 0 This Week
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  • 3

    AirStreamLib.NET

    C# .NET Library for playing Apple Airplay content

    .NET Library for playing Apple Airplay content from IOS devices (IPhone, IPad, IPod) and ITunes. Also includes a fully working Windows application for playing Airplay video/photos.
    Downloads: 0 This Week
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  • 4

    Algeo#

    A class library to use conformal geometric algebra in C#

    The project is in a very early state and the working parts aren't well tested! Currently it's possible to do basic calculations with multivectors. A lot of operators are overloaded so that you can write your calculations in C# source code almost like you would do in a math software. There is also an extension library providing a control which can visualize multivectors. Visualization is based on OpenGL through the OpenTK library. At the moment I'm working on improvements of the functionality of this library.
    Downloads: 0 This Week
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  • Atera IT Autopilot Icon
    Atera IT Autopilot

    Ensure operational efficiency at any scale with 24/7 autonomous IT support.

    IT Autopilot takes the pressure off your team by handling first-tier support across the channels your end users already live in — email, chat, Slack, Teams, and your Customer Portal. It doesn’t just respond to end-user queries, issues, and crises — it solves them.
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  • 5
    Amazon Neptune Gremlin .NET SigV4

    Amazon Neptune Gremlin .NET SigV4

    A custom library for Amazon Neptune that enables AWS Signature Version

    This project provides a custom library that extends the Apache TinkerPop Gremlin.NET client to enable AWS IAM Signature Version 4 signing for establishing authenticated connections to Amazon Neptune. For example usage refer to: NeptuneGremlinNETSigV4Example.cs. This example shows how to leverage this library for establishing an authenticated connection to Neptune. The GremlinClient library accepts both a GremlinServer object as well as a webSocketConfiguration object that contains a custom configuration set for establishing the WebSocket connection to Amazon Neptune. The SigV4RequestSigner library fetchs IAM credentials using the FallbackCredentialsFactory API (which works similarly to the Java Default Credential Provider Chain), performs the proper Signature Version 4 signing of an http request, and creates the proper WebSocket configuration based on this signed http request. One can then pass this webSocketConfiguration to the GremlinClient to create the connection to Neptune.
    Downloads: 0 This Week
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  • 6
    Application Management
    Application Management makes your application life easier. Automatic do memory management, handle and log unhandled exceptions, profiling your functions, make your application single instance and also provide util functions to get system information.
    Downloads: 0 This Week
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  • 7
    Asynchronous data access layer for .NET.
    Downloads: 0 This Week
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  • 8
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  • 9
    BenchmarkDotNet

    BenchmarkDotNet

    Powerful .NET library for benchmarking

    BenchmarkDotNet is a powerful .NET library designed for creating accurate and reproducible benchmarks. It handles complexities like warm-up, outlier removal, and statistical analysis, presenting results in a clean, customizable summary format. BenchmarkDotNet has tons of features that are essential in comprehensive performance investigations. Four aspects define the design of these features: simplicity, automation, reliability, and friendliness. A lot of hand-written benchmarks produce wrong numbers that lead to incorrect business decisions. BenchmarkDotNet protects you from most of the benchmarking pitfalls and allows you to achieve high measurement precision.
    Downloads: 0 This Week
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  • BrandMail Email Signatures for Outlook Icon
    BrandMail Email Signatures for Outlook

    Leverage every email as an opportunity to brand consistently and minimise the security risks associated with the tampering of HTML signatures.

    BrandMail®, developed by BrandQuantum, is a software solution that seamlessly integrates with Microsoft Outlook to empower every employee in the organisation to automatically create consistently branded emails via a single toolbar that provides access to brand standards and the latest pre-approved content.
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  • 10
    .Net extension methods, attributes and tools to make you more productive. Write less code, write less bugs.
    Downloads: 0 This Week
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  • 11
    BezierSignature
    A simple .NET signature box for handheld application. Usage of bezier curves makes the resulting signature look more like the pen and paper version.
    Downloads: 0 This Week
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  • 12
    A dynamic .NET library to operate on really big Integers. Supports all native c# Integer operators and some mathematical functions.
    Downloads: 0 This Week
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  • 13
    BikiSoft contains the windows software and atmel firmware for the BikiRom Mega-board product line. The bikirom boards are used to re-tune 1990-2002 Nissan SR20 based ECUs and ER34 ECUs. The hardware is available seperately.
    Downloads: 0 This Week
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  • 14
    THIS PROJECT HAS NOW MOVED TO GITHUB: https://github.com/arenhag/BizUnitCompare BizUnitCompare enables you to easily compare the actual result of your integrations with an expected result. It differs from the XPathValidationStep in that it allows you to define what to exclude rather than have to define everything to include.
    Downloads: 0 This Week
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  • 15
    BlueCsv
    Blue Csv es una libreria para la lectura y escritura de archivos CSV para .NET y java. descargar dll o jar segun el caso. Es liviana, potente y bien documentada por lo tanto facil de implementar para cualquier otro lenguaje.
    Downloads: 0 This Week
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  • 16
    BooruSharp

    BooruSharp

    A C# library to browse Booru websites

    BooruSharp is a C# library designed to simplify interaction with booru-style imageboard websites by providing a unified API for retrieving and managing image data across multiple platforms. It abstracts the differences between various booru implementations such as Danbooru, Gelbooru, and others, allowing developers to query posts, tags, and metadata without needing to handle site-specific logic. The library is distributed via NuGet and integrates seamlessly into .NET applications, making it particularly useful for developers building image browsers, bots, or automation tools. It supports a wide range of booru endpoints and exposes structured methods for accessing posts by ID, tags, or hashes, as well as retrieving random images and metadata. Additionally, BooruSharp includes support for related APIs such as comments, favorites, and tag autocomplete, depending on the target site.
    Downloads: 0 This Week
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  • 17
    Box.NET API is an easy to use C#.NET library for interfacing with the box.net web api. Allowing you to upload & download files. Create folders and other box.net functionality.
    Downloads: 0 This Week
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  • 18

    Braille Espresso For C#

    This is a library written for Braille translation.

    This library is designed to promote the importance of Braille while hiding learning concepts from developers. This is designed so that the developer only has to know that Braille is one more language without thinking of the rules or even knowing the system itself. The hope is to convince developers to apply Braille translation technology to web, GUI or any other application. Only a few lines of code are required.
    Downloads: 0 This Week
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  • 19
    This is simply a set of classes used to deserialize Collada files(core, fx, phys, b-rep, and kinematics). Should be more useful than classes created by the xsd.exe tool.
    Downloads: 0 This Week
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  • 20
    This project has moved to GitHub: https://github.com/bbadjari/ccli Library written in C# for use with CLI (command-line interface) applications. Provides command-line argument parsing and help screen printing.
    Downloads: 0 This Week
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  • 21
    A C# implementation of the Smart Space Access Protocol to access Smart-M3 (http://sourceforge.net/projects/smart-m3/). Hosted by the University of Bologna and under development within the ARTEMIS SOFIA project (http://www.sofia-project.eu/)
    Downloads: 0 This Week
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  • 22

    CCM (C# Collections Mapper)

    The CCM is a mini ORM, working with the database and C# collections

    CCM is a solution for the data management layer in the combination of Sql Server with a C # application. In whole this is a strongly typed entity mapper projecting the application's business logics onto database tables using T-SQL stored procedures. CCM allows you to implement fairly complex data structures in your application, without bothering about difficult and tedious questions of data acquisition and conversion issue, allowing you to pay more attention to the develop of business logic and UI. There no need to worry about migrations, context, etc. At the same time, ORM completely relieves the developer from direct communicating with ADO - datasets, tables, rows, and other data aceess component, to track connections, commands or operate with adapters because ORM works at a higher level of data abstraction. At the same time you will be completely protected from memory leaks and free to create complexity application logic at the primary data level.
    Downloads: 0 This Week
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  • 23
    C# Implementation of the Consumer Product Safety Recalls Database API. This application allows you to search the US. Recalls Database. The VS2010 source is separated into two projects. A dll / SDK is included to add this functionality in any .Net App
    Downloads: 0 This Week
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  • 24
    CQL

    CQL

    an all new query language and a sequel to SQL

    The project was developed for C/C++ programmers who are not familiar with SQL syntax.
    Downloads: 0 This Week
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  • 25
    CSChessControls contains chess controls for Windows Forms Application. Source code is open and free to use. Developed in C#.Avaliable controls are ; ChessBoard , CapturedPiecesControl, ChessTimer, FischerTimer
    Downloads: 0 This Week
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