AutoFixture by: Mark Seemann

AutoFixture makes it easier for developers to do Test-Driven Development by automating non-relevant Test Fixture Setup, allowing the Test Developer to focus on the essentials of each test case.

Autofac.Extensions.DependencyInjection by: Autofac Contributors

Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.

Ardalis.GuardClauses by: Steve Smith (@ardalis)

A simple package with guard clause helper methods. See docs for how to extend using your own extension methods.

Abp by: Halil İbrahim Kalkan

ASP.NET Boilerplate - A starting point for web applications with best practices and most popular tools.

App.Metrics.Concurrency by: Allan Hardy

Provides useful structures for performing efficient concurrent operations. Original Project: https://github.com/etishor/ConcurrencyUtilities, including a port of Java's LongAdder and Striped64 classes

AsyncUsageAnalyzers by: Sam Harwell et. al.

A collection of analyzers related to best practices for writing asynchronous code.

App.Metrics.Abstractions by: Allan Hardy

App Metrics Core abstractions and interfaces for metric types, reporting, filtering and more.

AntDesign by: James Yeung

🌈 A set of enterprise-class UI components based on Ant Design and Blazor WebAssembly.

AutoMapper.Extensions.Microsoft.DependencyInjection by: Jimmy Bogard

AutoMapper extensions for ASP.NET Core

Antlr by: Sam Harwell Terence Parr

ANother Tool for Language Recognition, is a language tool that provides a framework for constructing recognizers, interpreters, compilers, and translators from grammatical descriptions containing actions in a variety of target languages.

AutoMapper by: Jimmy Bogard

A convention-based object-object mapper. AutoMapper uses a fluent configuration API to define an object-object mapping strategy. AutoMapper uses a convention-based matching algorithm to match up source to destination values. Currently, AutoMapper is designed for model projection scenarios to flatten complex object models to DTOs and other simple objects, whose design is better suited for serialization, communication, messaging, or simply an anti-corruption layer between the domain and application layer.

Avalonia by: Avalonia Team

Avalonia is a cross-platform UI framework for .NET providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, macOS and with experimental support for Android, iOS and WebAssembly.

Autofac by: Autofac Contributors

Autofac is an IoC container for Microsoft .NET. It manages the dependencies between classes so that applications stay easy to change as they grow in size and complexity.

Asp.Versioning.Abstractions by: .NET Foundation and Contributors

The abstractions library for API versioning.

AngleSharp by: AngleSharp

AngleSharp is the ultimate angle brackets parser library. It parses HTML5, CSS3, and XML to construct a DOM based on the official W3C specification.

AspNet.Security.OpenIdConnect.Primitives by: Kévin Chalet

OpenID Connect primitives for the OpenID Connect server middleware.

Antlr3.Runtime by: Sam Harwell Terence Parr

The runtime library for parsers generated by the C# target of ANTLR 3. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2008 or newer.

Aspose.Cells by: Aspose

Aspose.Cells for .NET is a spreadsheet programming library that allows software developers to manipulate and convert spreadsheet files from within their own applications. A combination of APIs and GUI controls, Aspose.Cells for .NET speeds up Microsoft Excel programming and conversion. Aspose.Cells for .NET supports the popular spreadsheet (XLS, XLSX, XLSM, XLSB, XLTX, XLTM, CSV, TSV, SpreadsheetML, ODS) file formats your business use every day. It also allows exporting Excel files to PDF, XPS, HTML, MHTML, Plain Text and popular image formats including TIFF, JPG, PNG, BMP and SVG. Aspose.Cells for .NET is well documented to help you create your solutions on different platforms. Advanced Excel Spreadsheet Features Aspose.Cells for .NET not only supports spreadsheet generation and other basic file formatting features, it also supports a number of advanced features: - File Formats and Conversions: High quality conversions to and from XLS, XLSX, SpreadsheetML, CSV, HTML, TXT, Tab delimited and OpenDocument Spreadsheet formats. - Rendering and Printing: Convert whole workbook or pages in the worksheets to PDF, XPS. Also convert document pages to TIFF, PNG, JPEG, BMP or EMF images. All with high fidelity - exactly like Microsoft Excel®. - Spreadsheet Features: A rich object model which allows you to programmatically generate, combine, modify, format, protect, parse or otherwise examine loaded spreadsheets. - PageSetup Features: Implement PageSetup options for your worksheets with ease. - Extended Excel Graphics Capabilities: Create and manipulate charts, add customized charts using the product API and dynamically set data for charts. It also supports to convert charts to images. Platform Independence You can use Aspose.Cells for .NET to build any type of a 32-bit or 64-bit .NET application including ASP.NET, WCF, WinForms, UWP, .NET Standard, .NET Core etc. It is possible to use Aspose.Cells for .NET via COM Interop from ASP, Perl, PHP and Python. You can also use Aspose.Cells for .NET to build applications with Mono. Performance and Scalability Aspose.Cells is a single .NET assembly that can be deployed with any .NET application by simply copying it. You do not have to worry about any other services or modules. You can generate thousands of spreadsheets in quick time that involves opening a workbook, modifying content and formatting or populating it with data and saving it. Microsoft Office Automation – Not Needed Aspose.Cells for .NET APIs are built using managed code that do never need Microsoft Office or Microsoft Excel to be installed on the machine to work with Excel document formats. It is a perfect Microsoft Office automation alternative in terms of supported features, security, stability, scalability, speed and price. Aspose.Cells Grid Suite Aspose.Cells for .NET also provides independent .NET GUI controls for desktop and web applications: - Desktop Control for Windows Forms Applications - Web Control for ASP.NET Web Forms Applications (Apply formatting and formulae, import and export (DataTable, DataView), open, save and edit MS Excel files using the controls) Free support for Aspose.Cells for .NET is provided on our support forum: https://forum.aspose.com/ and on StackOverflow: https://stackoverflow.com/questions/tagged/aspose

apache-thrift-netcore by: The Apache Software Foundation

For .Net Core - naive port, use with caution...

AsyncEnumerator by: Serge Semenov

Introduces IAsyncEnumerable, IAsyncEnumerator, ForEachAsync(), and ParallelForEachAsync() GitHub: https://github.com/tyrotoxin/AsyncEnumerable PROBLEM SPACE Helps to (a) create an element provider, where producing an element can take a lot of time due to dependency on other asynchronous events (e.g. wait handles, network streams), and (b) a consumer that processes those element as soon as they are ready without blocking the thread (the processing is scheduled on a worker thread instead). EXAMPLE using System.Collections.Async; static IAsyncEnumerable<int> ProduceAsyncNumbers(int start, int end) { return new AsyncEnumerable<int>(async yield => { // Just to show that ReturnAsync can be used multiple times await yield.ReturnAsync(start); for (int number = start + 1; number <= end; number++) await yield.ReturnAsync(number); // You can break the enumeration loop with the following call: yield.Break(); // This won't be executed due to the loop break above await yield.ReturnAsync(12345); }); } // Just to compare with synchronous version of enumerator static IEnumerable<int> ProduceNumbers(int start, int end) { yield return start; for (int number = start + 1; number <= end; number++) yield return number; yield break; yield return 12345; } static async Task ConsumeNumbersAsync() { var asyncEnumerableCollection = ProduceAsyncNumbers(start: 1, end: 10); await asyncEnumerableCollection.ForEachAsync(async number => { await Console.Out.WriteLineAsync($"{number}"); }); } // Just to compare with synchronous version of enumeration static void ConsumeNumbers() { // NOTE: IAsyncEnumerable is derived from IEnumerable, so you can use either var enumerableCollection = ProduceAsyncNumbers(start: 1, end: 10); //var enumerableCollection = ProduceNumbers(start: 1, end: 10); foreach (var number in enumerableCollection) { Console.Out.WriteLine($"{number}"); } }