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.

  • Our Free Plans just got better! | Auth0 Icon
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
    Learn More
  • 1
    NPlot is an open source charting library for .NET. It boasts an elegant and flexible API. NPlot includes controls for Windows.Forms, ASP.NET and a class for creating Bitmaps. A GTK# control is also available.
    Downloads: 1 This Week
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  • 2
    Win32 dll frontend to ffmpeg and or tutorial on how to use ffmpeg
    Downloads: 1 This Week
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  • 3
    Win32/Win64 dll to format removable drives or hds
    Downloads: 1 This Week
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  • 4

    RsDesign.Controls

    WinForms Controls & Docking Forms

    Controls are working on operating systems Windows (on the platform. NET Framework 4.0). All components support visual styles: Visual Studio 2010, Office 2007, Office 2010. You can create and connect to other styles. In a set of more than 48 components including DataGridView and Docking Forms.
    Downloads: 1 This Week
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  • Contract Management Software | Concord Icon
    Contract Management Software | Concord

    AI-powered contract management that helps businesses track spending, negotiate smarter, and never miss deadlines.

    Concord serves small and mid-sized businesses and Fortune 500 companies. This robust, web-based platform is used by human resource, sales, procurement, and legal teams, and virtually anyone who deals with contracts.
    Learn More
  • 5
    SBML Layout: Graphical SBML Annotations
    The SBMLLayout Project provides libraries and tools for handling layout and render information of SBML Models. Supported are SBML Layout / Render Extension, CellDesigner annotations and JDesigner annotations.
    Downloads: 1 This Week
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  • 6
    A plotting (chart) library for .NET. Provides the ability to create plots with a minimum of effort and also to customise them extensively where required.
    Downloads: 1 This Week
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  • 7
    libtar

    libtar

    libtar is a lightweight C# library for extracting TAR archives.

    libtar is a lightweight C# library for extracting TAR archives. It provides a simple API to extract all files from TAR archives. Nuget: https://www.nuget.org/packages?q=libtar
    Downloads: 1 This Week
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  • 8

    .NET Bindings

    .NET runtime bindings for WFMATH

    This project is a subproject of the WFMATH library, a library providing several complex mathematical primitives. This library will allow .NET programmers to use WFMATH in their code.
    Downloads: 0 This Week
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  • 9
    A tree view control for .NET that allows the user the option of multiple selection of entries. Based entirely on the ".NET Multi-Select TreeView" project, this project contains bug fixes. original: https://sourceforge.net/projects/mstreeview/
    Downloads: 0 This Week
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  • The software that empowers your board, from a name you trust. Icon
    The software that empowers your board, from a name you trust.

    For businesses in all industries interested in an enterprise governance software for boards and leadership teams

    Nasdaq Boardvantage helps directors, committees, and leadership teams be better prepared, engaged, and aligned in their collaboration and decision-making processes. Plus, our board portal makes it easier than ever for corporate secretaries and administrators to manage meetings, build agendas, and distribute materials
    Learn More
  • 10

    .Net Component Suite for Delphi

    Most comprehensive Library of .Net components for Delphi.

    Most comprehensive Library of .Net components for Delphi. Includes over 30 essential .Net components which are available in Delphi like Active Directory components, Internet components, printing components, system components and many more for building powerful line-of-business Windows applications in Delphi. All the included components libraries are technically superior, with proven track record of widespread use for rock-solid reliability. They are written to be efficient and do not depend on external DLLs. All libraries are feature-rich yet easy to use due to emphasis on intuitive API design. Tightly integrated with Embarcadero Delphi, you can use all features available in the Embarcadero Delphi IDE for your development tools and start working with UI instantly. The .Net Component Suite for Delphi is part of .Net VCL for Delphi(http://www.crystalnet-tech.com/DotNetVCL/DotNetVCL4Delphi.aspx)
    Downloads: 0 This Week
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  • 11
    .Net Core for Delphi/Lazarus

    .Net Core for Delphi/Lazarus

    The best library to work with the .Net Core from Delphi and Lazarus.

    The .Net Core for Delphi/Lazarus (dotNetCore4Delphi) is a .Net Core Runtime Library for Delphi which helps Delphi/Pascal developers work with .Net Core. It is designed to provide a way to interact with .Net Core applications from Delphi/Pascal. What dotNetCore4Delphi can do: - Access .Net Core Framework Class Library. - Access Third Party .Net Core Libraries. - Access Your .Net Core Libraries. - etc Competitive Advantages: - Cross-platform framework that runs on Windows, Linux and macOS operating systems. - No extra dll is required when deployed. - Allows Delphi and Lazarus to consume .Net Core Libraries as if they were native code. - Full access to .Net Core Framework Class Library. - Lightweight and easy to use.
    Downloads: 0 This Week
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  • 12

    .Net WCF Provider Proxy

    WCF wrapper for the Microsoft ASP.Net Providers

    This is a client/server wrapper to create a proxy between an secure application server inside a firewall and the less secure web server for the Membership, Profile, and Role providers. Although the main scenario is to enable a WCF communication channel to allow a web site to take advantage of the built-in SQL providers within a website that may not have access to the database directly, any provider meeting the provider model criteria can be used.
    Downloads: 0 This Week
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  • 13
    2D XNA Primitive Shapes Library
    A library for drawing 2D primitive shapes in XNA. The library has methods for drawing pixels, lines, rectangles, filled rectangles, circles, and arcs. Development moved to: https://bitbucket.org/C3/2d-xna-primitives
    Downloads: 0 This Week
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  • 14
    2licht Irrlicht Engine Wrapper

    2licht Irrlicht Engine Wrapper

    Multi-Language Wrapper Collection for the Irrlicht Engine

    2licht's aim is to provide a collection of wrappers for the popular Irrlicht Engine (http://irrlicht.sf.net/). It is still in development; the first wrappers to be released will be the C and Object Pascal interface; followed by a .NET library.
    Downloads: 0 This Week
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  • 15
    7-Zip-NBinding
    .NET wrapper for 7Zip, based on 7-Zip-JBinding, produced with IKVM. Extracts (password protected, multi-part) 7z Zip Rar Tar Split Lzma Iso HFS GZip Cpio BZip2 Z Arj Chm Lhz Cab Nsis Deb Rpm Udf archives. Archive creation/more formats coming soon.
    Downloads: 0 This Week
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  • 16
    ACMESharp

    ACMESharp

    An ACME client library and PowerShell client for the .NET platform

    An ACME client library and PowerShell client for the .NET platform. This project implements a client library and PowerShell client for the ACME protocol. ACMESharp is interoperable with the CA server used by the Let's Encrypt project which is the reference implementation for the server-side ACME protocol. ACMESharp includes features comparable to the official Let's Encrypt client which is the reference implementation for the client-side ACME protocol. The ACMESharp client implementation is broken up into layers that build upon each other. Basic tools and services required for implementing the ACME protocol and its semantics (JSON Web Signature (JWS), PKI operations, client-side persistence) Low-level ACME protocol client library that can interoperate with a compliant ACME server. PowerShell module that implements a powerful client, that functions equally well as a manual tool or a component of a larger automation process, for managing ACME Registrations, Identifiers, etc.
    Downloads: 0 This Week
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  • 17
    APIFilmAffinityIMDb

    APIFilmAffinityIMDb

    API for FilmAffinity and IMDb

    API for FilmAffinity and IMDb
    Downloads: 0 This Week
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  • 18

    ARTCOMParser

    Parser library that uses an EBNF like grammar to generate a parse tree

    Parser library that uses an EBNF like grammar to generate a parse tree You can use it to create a quick parser It uses backtracking so it may be slow for some grammar rules
    Downloads: 0 This Week
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  • 19
    ASP.NET API Versioning

    ASP.NET API Versioning

    Libraries which add service API versioning to ASP.NET Web API

    ASP.NET API versioning gives you a powerful, but easy-to-use method for adding API versioning semantics to your new and existing REST services built with ASP.NET. The API versioning extensions define simple metadata attributes and conventions that you use to describe which API versions are implemented by your services. You don't need to learn any new routing concepts or change the way you implement your services in ASP.NET today. The default API versioning configuration is compliant with the versioning semantics outlined by the Microsoft REST Guidelines. There are also a number of customization and extension points available to support transitioning services that may not have supported API versioning in the past or supported API versioning with semantics that are different from the Microsoft REST versioning guidelines.
    Downloads: 0 This Week
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  • 20
    ASP.NET PDF Viewer by GroupDocs

    ASP.NET PDF Viewer by GroupDocs

    Secure, Browser-Agnostic ASP.NET PDF Viewer with DRM Features

    This sample project is created by the GroupDocs showcase team to demonstrate key benefits of an ASP.NET PDF viewer built using the commercial library – GroupDocs.Viewer for .NET. The viewer allows you to display PDF documents across all standard web-browsers (IE8+, Chrome, Mozilla Firefox, Safari 5+, Opera, etc.) without having to install any software or plugins on end-user machines. Another core feature – is the ability to display PDFs in a read-only mode, so that end users can’t download, print or copy original PDF files while viewing them in a browser. Please note that GroupDocs.Viewer for .NET is a paid library. In order to setup and run this project, you will need to download the GroupDocs.Viewer for .NET library from the GroupDocs website. For more details on the sample ASP.NET PDF viewer and to download the library, please read this article: > http://groupdocs.com/blog/asp-net-pdf-viewer-built-based-on-the-groupdocs-viewer-for-net-library
    Downloads: 0 This Week
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  • 21
    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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  • 22
    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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  • 23

    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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  • 24

    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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  • 25
    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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