.NET Standard 2.0

Atataatata-framework/atata

A C#/.NET web UI test automation framework using a fluent page object pattern and Selenium WebDriver.

Argufsprojects/Argu

A declarative CLI argument and XML configuration parser with help message generation for F# applications.

NetworkerMarkioE/Networker

A simple, fast TCP and UDP networking library for .NET and Unity, supporting dependency injection and multiple serializers.

JsonFlatFileDataStorettu/json-flatfile-datastore

A lightweight .NET library for storing and querying data in JSON flat files with support for typed and dynamic data.

SlackAPIInumedia/SlackAPI

A .NET implementation of Slack's WebAPI and Real Time Messaging API for C# applications.

Toxynissl-lab/toxy

A .NET framework for extracting and exporting text and data from a wide variety of document formats.

FluentStoragerobinrodricks/FluentStorage

A polycloud .NET library providing a unified API for blob storage and messaging across AWS, Azure, GCP, FTP, and other providers.

ASP.NET SAMLjitbit/AspNetSaml

A minimal SAML 2.0 client library for adding single-sign-on to ASP.NET applications.

Orchard Core - Modular and Multi-tenant applicationsOrchardCMS/OrchardCore.Samples

Sample applications demonstrating how to build modular and multi-tenant ASP.NET Core applications using the Orchard Core Framework.

Streamstoneyevhen/Streamstone

A tiny embeddable library for building scalable event-sourced applications on Azure Table Storage.

httpclient-interceptionjusteat/httpclient-interception

A .NET library for intercepting and stubbing HTTP requests made by HttpClient, primarily for testing purposes.

SiaNetSciSharp/SiaNet

An easy-to-use C# deep learning library with support for multiple backends including TensorFlow, PyTorch, and CUDA/OpenCL.

Auth0auth0/auth0.net

Official .NET client library for interacting with Auth0 Authentication and Management APIs with automatic token management.

Dropbox.NETdropbox/dropbox-sdk-dotnet

Official .NET SDK for integrating with Dropbox API v2, enabling file management and user authentication.

ExtendedXmlSerializerwojtpl2/ExtendedXmlSerializer

A configurable and extensible XML serializer for .NET that handles POCOs, interfaces, immutable objects, and circular references.

Colourfultompazourek/Colourful

An open-source .NET library for converting colors between various color spaces, computing color differences, and handling illuminants.

YantraJSyantrajs/yantra

A managed JavaScript engine for .NET written in C#, designed for high-performance integration between C# and JavaScript.

Typinadambajguz/Typin

A declarative, ASP.NET Core-inspired framework for building interactive and direct-mode command-line applications in .NET.

Plycrowded/ply

High-performance Task and ValueTask computation expressions for F# with minimal overhead.

neo4j-dotnet-driverneo4j/neo4j-dotnet-driver

The official .NET driver for connecting to Neo4j graph databases using the Bolt protocol.

SimplySqlmithrandyr/SimplySql

A PowerShell module providing intuitive cmdlets for querying SQL Server, Oracle, PostgreSQL, SQLite, and MySQL databases.

graphql-conventiongraphql-dotnet/conventions

A .NET library that automatically generates GraphQL schemas from your existing .NET classes and methods.

MessageFormat.NETjeffijoe/MessageFormat.NET

ICU MessageFormat implementation for .NET enabling locale-aware pluralization, gender selection, and number/date formatting.

Lyniconjamesej/lyniconanc

A lightweight, composable CMS for ASP.NET Core that adds content management to existing sites with minimal impact.

Portable.BouncyCastlenovotnyllc/bc-csharp

A C# implementation of cryptographic algorithms and protocols with support for .NET 4, .NET Standard 2.0, MonoAndroid, Xamarin.iOS, and .NET Core.

CsvExportjitbit/CsvExport

A very simple and fast CSV-export library for C#, optimized for performance and Excel compatibility.

Karambolo.Extensions.Logging.Fileadams85/filelogger

A lightweight, customizable file logger provider for Microsoft.Extensions.Logging with async processing and JSON support.

MailBodydoxakis/MailBody

A .NET library for generating transactional emails using a fluent interface.

NPOItonyqus/npoi

A .NET library for reading and writing Office formats (Excel, Word) without requiring Microsoft Office installation.

dotnet-standard-sdkwatson-developer-cloud/dotnet-standard-sdk

A .NET Standard library for accessing IBM Watson cognitive services like Assistant, Discovery, and Speech-to-Text.

Unicolourwaacton/Unicolour

A comprehensive .NET library for colour conversion, interpolation, comparison, and gamut mapping across 40+ colour spaces.

AdyenAdyen/adyen-dotnet-api-library

Official .NET library for integrating with Adyen's payment APIs, supporting payments, checkout, payouts, and point-of-sale transactions.

Manatee.Trellogregsdennis/Manatee.Trello

A fully object-oriented .NET wrapper for Trello's RESTful API, written in C#, providing an intuitive entity model.

Shellertwitchax/Sheller

A .NET library providing a fluent, human-readable API for executing shell commands from C# code.

CryptoNetmaythamfahmi/CryptoNet

A lightweight .NET library for asymmetric and symmetric encryption with RSA, AES, and DSA support.

Oktaokta/okta-aspnet

Okta ASP.NET middleware enables OAuth 2.0/OIDC authentication and authorization for ASP.NET and ASP.NET Core applications.