NuGet Trends holds historical data of NuGet packages download numbers. It's a useful tool for package maintainers to see the download rate of their packages and also for people interested in packages popularity over time. The database has the complete nuget.org catalog which include target framework information. That means that there's a lot more features we can add, like TFM adoption overtime, dependency graphs etc.

NuGet Package Explorer (NPE) is an application that makes it easy to create and explore NuGet packages. You can load a .nupkg or .snupkg file from disk or directly from a feed such as nuget.org.

NuGet is the package manager for the Microsoft development platform including .NET. The NuGet client tools provide the ability to produce and consume packages. The NuGet Gallery (nuget.org) is the central package repository used by all package authors and consumers.

Nerdbank.GitVersioning adds precise, semver-compatible git commit information to every assembly, VSIX, NuGet and NPM package, and more. It implicitly supports all cloud build services and CI server software because it simply uses git itself and integrates naturally in MSBuild, gulp and other build scripts.

The NEO Project is a modern distributed network for the Smart Economy.

MvvmCross is a cross platform MVVM framework which lets you, build clean, pixel perfect, native UIs. Share behavior and business logic in a single codebase across supported platforms, using the Model-View-ViewModel (MVVM) design pattern. MvvmCross is a framework specifically developed for Xamarin and the mobile ecosystem. It supports Xamarin.iOS, Xamarin.Android, Xamarin.Mac, Xamarin.Forms, Universal Windows Platform (UWP) and Windows Presentation Framework (WPF)

The Microsoft Build Engine, also known as MSBuild, is a platform for building applications.

MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker) and supports the MQTT protocol up to version 5.

Mono is a cross-platform and open source implementation of the .NET framework that was started independently in 2001. The technology was originally developed by Ximian, which was acquired by Novell, then at Novell, then at Xamarin and now Microsoft.

ML.NET is a cross-platform open-source machine learning framework which makes machine learning accessible to .NET developers. ML.NET allows .NET developers to develop their own models and infuse custom ML into their applications without prior expertise in developing or tuning machine learning models, all in .NET.

The Azure WebJobs SDK is a framework that simplifies the task of writing background processing code that runs in Azure WebJobs. It includes a declarative binding and trigger system that works with Azure Storage Blobs, Queues and Tables as well as Service Bus. The binding system makes it incredibly easy to write code that reads or writes Azure Storage objects. The trigger system automatically invokes a function in your code whenever any new data is received in a queue or blob. The SDK also provides an integrated Dashboard experience in the Azure management portal, with rich monitoring and diagnostics information for your WebJob runs.

MimeKit is a C# MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF, and Unix mbox spools.

MailKit is a cross-platform .NET mail client library with support for IMAP, POP3, and SMTP.

MahApps.Metro is a framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort, supporting .NET Framework and .NET Core.

LLVMSharp is a multi-platform .NET Standard library for accessing the LLVM infrastructure. The bindings are auto-generated using ClangSharp parsing LLVM-C header files.

linq2db - 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..

Kudu is the engine behind GitHub deployments, WebJobs, and various other features in Azure Web Sites. It can also run outside of Azure.

A complete Kerberos library built entirely in managed code without (many) OS dependencies.

Json.NET is a popular high-performance JSON framework for .NET.

Infer.NET is a framework for running Bayesian inference in graphical models. It can also be used for probabilistic programming.