Open Source C# Frameworks - Page 3
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C# Frameworks
View 167 business solutionsBrowse free open source C# Frameworks and projects below. Use the toggles on the left to filter open source C# Frameworks by OS, license, language, programming language, and project status.
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MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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opencvsharp
OpenCV wrapper for .NET
OpenCV wrapper for .NET. Some Docker images are provided to use OpenCvSharp with AppEngine Flexible. The native binding (libOpenCvSharpExtern) is already built in the docker image and you don't need to worry about it. OpenCvSharp won't work on Unity and Xamarin platform. For Unity, please consider using OpenCV for Unity or some other solutions. OpenCvSharp does not support CUDA. If you want to use the CUDA features, you need to customize the native bindings yourself. Objects of classes, such as Mat and MatExpr, have unmanaged resources and need to be manually released by calling the Dispose() method. Worst of all, the +, -, *, and other operators create new objects each time, and these objects need to be disposed of, or there will be memory leaks. Despite the using syntax, the code still looks very verbose. -
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Okapi Framework (Old .NET version)
See http://okapi.opentag.com/ for LATES VERSION of the Okapi Framework
THIS VERSION ON SOURCEFORGE IS NO LONGER SUPPORTED and works only on Windows. The Okapi Framework is a set of components and tools for localization and translation tasks. THE NEWEST JAVA-BASED VERSION OF OKAPI IS AVAILABLE AT: http://okapi.opentag.com/ The new version runs on Windows, Mac, Linux, etc. -
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The Tao Framework
Superseded by OpenTK: https://sourceforge.net/projects/opentk/
The Tao Framework for .NET is a collection of bindings to facilitate cross-platform game-related development utilizing the .NET platform. Superseded by OpenTK: https://sourceforge.net/projects/opentk/ -
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ASP.NET Boilerplate
A web application framework
ASP.NET Boilerplate is a general purpose application framework especially designed for new modern web applications. It uses already familiar tools and implements best practices around them to provide you a SOLID development experience. Provides a layered architectural model based on Domain Driven Design. Designed as modular and extensible. Provides infrastructure to build your own modules too. SaaS applications made easy! Integrated multi-tenancy from database to UI. Designed and developed DDD in mind. Provides a SOLID model for your application. Compherensive documentation and jump start tutorials. Actively developed on GitHub (MIT license) and open for contributions. Don't Repeat Yourself! ASP.NET Boilerplate automates common software development tasks by convention. You focus on your business code. Create your solution based on free or premium startup templates. Either with an Angular Single-Page Application or Classic MVC & jQuery architecture. -
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App Metrics
App Metrics is an open-source and cross-platform .NET library
App Metrics is an open-source and cross-platform .NET library used to record metrics within an application. App Metrics can run on .NET Core or on the full .NET framework also supporting .NET 4.5.2. App Metrics abstracts away the underlying repository of your Metrics for example InfluxDB, Prometheus, Graphite, Elasticsearch etc, by sampling and aggregating in memory and providing extensibility points to flush metrics to a repository at a specified interval. App Metrics provides various metric types to measure things such as the rate of requests, counting the number of user logins over time, measuring the time taken to execute a database query, measuring the amount of free memory, and so on. Metrics types supported are Apdex, Gauges, Counters, Meters, Histograms, and Timers. Support Push and Pull based metrics collection via TSDB-specific reporting extensions and exposing metrics in the required format over HTTP. -
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Electron.NET
Build cross platform desktop apps with ASP.NET Core
Build cross-platform desktop apps with .NET 5 and ASP.NET NET Core (Razor Pages, MVC), Blazor. Electron.NET is a wrapper around a "normal" Electron application with an embedded ASP.NET Core application. Via our Electron.NET IPC bridge we can invoke Electron APIs from .NET. The CLI extensions host our toolset to build and start Electron.NET applications. There are lots of different approaches how to get an X-plat desktop app running. We thought it would be nice for .NET devs to use the ASP.NET Core environment and just embed it inside a pretty robust X-plat environment called Electron. Porting Electron to .NET is not a goal of this project, at least we don't have any clue how to do it. We just combine ASP.NET Core & Electron. The current Electron.NET CLI builds Windows/macOS/Linux binaries. Our API uses .NET 5, so our minimum base OS is the same as .NET 5. -
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LibGit2Sharp
Git + .NET/Mono
libgit2 is a portable, pure C implementation of the Git core methods provided as a re-entrant linkable library with a solid API, allowing you to write native speed custom Git applications in any language that supports C bindings. Linux, macOS, iOS, and Windows are fully tested and supported. Written in a well-supported subset of C99. Builds in GCC, Clang and MSVC. We use the libraries that are on your system, and you can opt-out of any dependencies. GPLv2 with a Linking Exception that lets you use it with open or proprietary software. LibGit2Sharp strives to have a comprehensive and robust unit test suite to ensure the quality of the software and to assist new contributors and users, who can use the tests as examples to jump start development. There are over one thousand unit tests for LibGit2Sharp, and this number will only grow as functionality is added. -
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Pixeval
Wow. Yet another Pixiv client!
Pixeval is a third-party proxy-free P station client developed by me as an amateur. The UI is implemented using Windows Presentation Foundation , based on .NET Core 3.0 , and supports Windows 7-10 (planning to cancel support other than Win10), and implements most of the The browsing function and many enhancements have been made. It has been open sourced on Github based on the AGPL protocol . The project was conceived in 2018. At that time, the api of the P station was written in Java. At that time, it could also be accessed by modifying the hosts method. After that, GFW The blocking strategy was upgraded, and DNS pollution was upgraded to SNI blocking, so I went to find information to understand the different blocking levels and blocking mechanisms of GFW. I started writing this project in the second half of 2019, which took about 3 months. (Actually, the realization of this project is partly inspired by Notsfsssf. -
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SDK .NET
Temporal .NET SDK
Temporal is a distributed, scalable, durable, and highly available orchestration engine used to execute asynchronous, long-running business logic in a scalable and resilient way. "Temporal .NET SDK" is the framework for authoring workflows and activities using .NET programming languages. -
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STD Foundation Classes
Object oriented frameworks - PowerBuilder, PowerServer & InfoMaker!
by Chris Pollach (http://chrispollach.blogspot.ca) A fully integrated "object oriented" set of PB Classes for the following products: PowerBuilder, PowerClient & PowerServer. The framework greatly enhances the development process by making the PowerBuilder developer significantly more productive! License: https://sourceforge.net/projects/stdfndclass/files/License (Open Source) => Updated version of the STD "Integrated" framework 2026R1 build 2026.1.0.467 was released to production on 2026-01-09. https://sourceforge.net/projects/stdfndclass/files/FrameWork/Integrated => The STD Framework "Example Apps" 2026 R1 latest builds https://chrispollach.blogspot.com/2026/03/updated.html => Updated version of the STD "Order Entry" example App 2025R2 build 2026.1.0.647 was released on 2026-04-08. https://sourceforge.net/projects/stdfndclass/files/Applications/PowerBuilder/OrderEntry -
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http://www.filehelpers.net The FileHelpers are an easy to use .NET library written in C#. Is designed to read/write data from flat files with fixed length or delimited records (CSV). Also has support to import/export data from different data storages (Excel, Access, SqlServer) Code on GitHub: https://github.com/MarcosMeli/FileHelpers
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C# ECG Toolkit
ECG Toolkit support for: SCP-ECG, DICOM, HL7 aECG, ISHNE & MUSE-XML
C# ECG Toolkit is an open source software toolkit to convert, view and print electrocardiograms. The toolkit is developed using C# .NET Framework 2.0 and later (code also supports netstandard2.0). Support for ECG formats: SCP-ECG, DICOM, HL7 aECG, ISHNE, MUSE-XML and OmronECG. -
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ABP Framework
Open source web application framework for ASP.NET core
ABP Framework is a complete infrastructure to create modern web applications by following the best practices and conventions of software development. Rich authentication & authorization options integrated to ASP.NET Core Identity & IdentityServer4. Provides an extensible & detailed permission system. Don't repeat yourself to implement all this common stuff again & again. Focus on your business code and let ABP automate them by conventions. Easily publish & consume distributed events using built-in Distributed Event Bus with RabbitMQ integration available. Create reusable UI themes and layouts or use one of the pre-built UI themes. Automatically filter on querying from the database to easily implement patterns like soft-delete and multi-tenancy. Instead of manually writing the repeating details of bootstrap components, use ABP's tag helpers to simplify them and take advantage of the IntelliSense. Quickly build UI forms based on a C# model using the dynamic form tag helper. -
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Adaptive Cards
A new way for developers to exchange card content
Adaptive Cards are platform-agnostic snippets of UI, authored in JSON, that apps and services can openly exchange. When delivered to a specific app, the JSON is transformed into native UI that automatically adapts to its surroundings. It helps design and integrate lightweight UI for all major platforms and frameworks. Modern digital life is hectic. Users are constantly switching between devices, apps, and services to get their job done. Adaptive Cards help you increase engagement and efficiency by injecting your actionable content directly into the apps they use every day. A conversational bot powered by Adaptive Cards can greatly simplify business workflows on your web site or through other channels. As the digital hub for many modern workers, Teams offers multiple extensibility points for apps to integrate with. Email has long been life-blood of an information worker, and now you can deliver actionable content directly to their inbox. -
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Akavache
An asynchronous, persistent key-value store
An asynchronous, persistent key-value store created for writing desktop and mobile applications, based on SQLite3. Akavache is great for both storing important data as well as cached local data that expires. Downloading and storing remote data from the internet while still keeping the UI responsive is a task that nearly every modern application needs to do. However, many applications that don't take the consideration of caching into the design from the start often end up with inconsistent, duplicated code for caching different types of objects. Akavache is a library that makes common app patterns easy, and unifies caching of different object types (i.e. HTTP responses vs. JSON objects vs. images). It's built on a core key-value byte array store (conceptually similar to a Dictionary<string, byte[]>), and on top of that store, extensions are added to support Arbitrary objects via JSON.NET. -
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C# Extension Methods
C# Extension Methods | Over 1000 extension methods:
Enhance the .NET Framework with over 1000 extension methods. Open a binary file, reads the contents of the file into a byte array, and then closes the file. Extract all the files in the specified zip archive to a directory on the file system. Get started by learning C# Extension Methods from cheat sheet. Get started by searching from documented extension methods. Get started by searching and trying some online example. -
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Cecil
Cecil is a library to inspect, modify and create .NET programs
Cecil is a library to inspect, modify and create .NET programs and libraries. Mono.Cecil is a library to generate and inspect programs and libraries in the ECMA CIL form. Analyze .NET binaries using a simple and powerful object model, without having to load assemblies to use Reflection. Modify .NET binaries, add new metadata structures and alter the IL code. Cecil has been around since 2004 and is widely used in the .NET community. If you're using Cecil, or depend on a framework, project, or product using it, please consider sponsoring Cecil. Cecil 0.10 beta 5 addresses a long standing issue: previously, a rewrite of native pdb files would lose some debugging information, including the list of namespaces that were used in methods (and thus breaking the expression evaluation) or the scopes in generators (for iterators or async methods). -
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ChilliCream GraphQL Platform
Welcome to the home of the Hot Chocolate GraphQL server for .NET
Welcome to the home of the Hot Chocolate GraphQL server for .NET, the Strawberry Shake GraphQL client for .NET and Banana Cake Pop awesome Monaco-based GraphQL IDE. The ChilliCream GraphQL Platform, at its core, is a new way to create powerful Backends. HotChocolate, our .NET GraphQL server, connects any service or data source and creates a cohesive service to offer your consumers a unified API. -
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Clean Architecture
Clean Architecture Solution Template
A starting point for Clean Architecture with ASP.NET Core. Clean Architecture is just the latest in a series of names for the same loosely-coupled, dependency-inverted architecture. You will also find it named hexagonal, ports-and-adapters, or onion architecture. This architecture is used in the DDD Fundamentals course by Steve Smith and Julie Lerman. Contact Steve's company, NimblePros, for Clean Architecture or DDD training and/or implementation assistance for your team. After installing the template, you should be able to create a new project in Visual Studio and search for Clean Architecture. You should see the template appear in your list of project templates. Note that the template is generally only updated with major updates to the project. The GitHub repository will always have the latest bug fixes and enhancements. -
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ConsoleGUI
A GUI framework for C# console applications
ConsoleGUI is a simple layout-driven .NET framework for creating console-based GUI applications. It provides the most essential layout management utilities as well as a set of basic controls. This framework is platform-agnostic and dependency-free. The library targets .NET standard 2.0 and should run fine on both Windows and Linux machines. What sets this library apart from other projects that provide similar functionalities, is the fact that the ConsoleGUI framework is fully layout-driven. In this regard, it’s more like WPF or HTML, than for example Windows Forms. You don’t specify the exact coordinates at which a given control should reside, but rather let stack panels, dock panels, and other layout managers do their work. I don’t claim it’s THE right way of doing things, it’s just what my background is. The ConsoleGUI (as many other UI frameworks) is not thread-safe. All UI changes should be performed from the same thread. -
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Coverlet
Cross platform code coverage for .NET
Coverlet is a cross-platform code coverage framework for .NET, with support for line, branch and method coverage. It works with .NET Framework on Windows and .NET Core on all supported platforms. Coverlet documentation reflect the current repository state of the features, not the released ones. Check the changelog to understand if the documented feature you want to use has been officially released. Coverlet is integrated into the Visual Studio Test Platform as a data collector. Coverlet also integrates with the build system to run code coverage after tests. Enabling code coverage is as simple as setting the CollectCoverage property to true. The coverlet tool is invoked by specifying the path to the assembly that contains the unit tests. You also need to specify the test runner and the arguments to pass to the test runner using the --target and --targetargs options respectively. -
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FileHelpers
The FileHelpers are a free and easy to use .NET library to read/write
FileHelpers is a free and easy-to-use .NET library to import or export data from fixed length or delimited records in files, strings or streams. You can strongly type your flat file (fixed or delimited) by simply describing a class that maps to each record and later read or write your file as a strongly typed .NET array. The library also has support to import or export data from different data storage types like Excel, Access, SqlServer, etc. In almost every project there is a need to read or write data from/to a file of a specified format. For example, log parsing, data warehouse and OLAP applications, communication between systems, file format transformations (for example transforming from a fixed length to a CSV file). The FileHelpers library is straightforward to learn and use. The engines of the library contain events to make it easier to extend the behavior of the library. -
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IdentityServer4
OpenID Connect and OAuth 2.0 Framework for ASP.NET Core
IdentityServer is a free, open-source OpenID Connect and OAuth 2.0 framework for ASP.NET Core. Founded and maintained by Dominick Baier and Brock Allen, IdentityServer4 incorporates all the protocol implementations and extensibility points needed to integrate token-based authentication, single-sign-on and API access control in your applications. IdentityServer4 is officially certified by the OpenID Foundation and thus spec-compliant and interoperable. It is part of the .NET Foundation and operates under their code of conduct. It is licensed under Apache 2 (an OSI-approved license). Active development happens on the main branch. This always contains the latest version. Each (pre-) release is tagged with the corresponding version. The aspnetcore1 and aspnetcore2 branches contain the latest versions of the older ASP.NET Core based versions. -
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LINQ to DB
Linq to database provider
LINQ to DB is the fastest LINQ database access library offering a simple, light, fast, and type-safe layer between your POCO objects and your database. Architecturally it is one step above micro-ORMs like Dapper, Massive, or PetaPoco, in that you work with LINQ expressions, not with magic strings, while maintaining a thin abstraction layer between your code and the database. Your queries are checked by the C# compiler and allow for easy refactoring. However, it's not as heavy as LINQ to SQL or Entity Framework. There is no change-tracking, so you have to manage that yourself, but on the positive side you get more control and faster access to your data. In other words LINQ to DB is type-safe SQL. Alternatively, you can implement custom settings provider with ILinqToDBSettings interface. You can generate POCO classes from your database using T4 templates. -
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Marten
.NET Transactional Document DB and Event Store on PostgreSQL
The Marten library provides .NET developers with the ability to use the proven PostgreSQL database engine and its fantastic JSON support as a fully-fledged document database. The Marten team believes that a document database has far-reaching benefits for developer productivity over relational databases with or without an ORM tool. Marten also provides .NET developers with an ACID-compliant event store with user-defined projections against event streams. Use proven PostgreSQL database engine, its fantastic JSON support and ACID compliance as the underlying data store. A robust and full-fledged document database to boost your developer productivity. Build event-sourced style systems with ease to store events and streams. Use projections to create read-side views. Refer to the build commands section to look up the commands to run Mocha tests.
