Prism.Events by: Brian Lagunas, Dan Siegel

Prism.Events is a library that facilitates communication between loosely coupled components in an application. It provides an event aggregator service that allows publishers and subscribers to interact through events without direct references. With multicast publish/subscribe functionality, multiple publishers can raise the same event, and multiple subscribers can listen to it, enabling flexible and efficient communication.

Prism.Forms by: Brian Lagunas, Dan Siegel

Prism provides an implementation of a collection of design patterns that are helpful in writing well structured, maintainable, and testable XAML applications, including MVVM, dependency injection, commanding, event aggregation, and more. Prism's core functionality is a shared library targeting the .NET Framework and .NET. Features that need to be platform specific are implemented in the respective libraries for the target platform (WPF, Uno Platform, .NET MAUI and Xamarin Forms). Prism for Xamarin.Forms helps you more easily design and build rich, flexible, and easy to maintain Xamarin.Forms applications. This library provides user interface composition as well as modularity support.

prometheus-net by: andrasm, qed-, lakario, sandersaares

.NET client library for the Prometheus monitoring and alerting system

prometheus-net.AspNetCore by: andrasm, qed-, lakario, sandersaares

ASP.NET Core middleware and stand-alone Kestrel server for exporting metrics to Prometheus

prometheus-net.SystemMetrics by: Daniel Lo Nigro

Export system metrics (CPU usage, disk usage, etc) to Prometheus from your .NET app.

protobuf-net by: Marc Gravell

Provides simple access to fast and efficient "Protocol Buffers" serialization from .NET applications

protobuf-net.Core by: Marc Gravell

The protobuf-net serialization engine and build-time tooling; most projects should reference protobuf-net, which adds the runtime type model

protobuf-net.Grpc by: Marc Gravell

Code-first gRPC for .NET: declare services as .NET interfaces, with no .proto file and no generated client; shared core for clients and servers

protobuf-net.Grpc.AspNetCore by: Marc Gravell

Hosts code-first gRPC services in ASP.NET Core

protobuf-net.Grpc.AspNetCore.Reflection by: Marc Gravell

gRPC server reflection for code-first services hosted in ASP.NET Core

protobuf-net.Grpc.Reflection by: Marc Gravell

Generates .proto schemas from code-first gRPC contracts, and implements the gRPC reflection service

protobuf-net.Reflection by: Marc Gravell

ProtoBuf DSL (proto2 / proto3) and descriptor tools for protobuf-net

ProtoBufJsonConverter by: Stef Heyenrath

Convert a protobuf message to a JSON string or object (and back) using the proto definition file.

PuppeteerSharp by: Darío Kondratiuk

Headless Browser .NET API

pythonnet by: Python.Runtime

Python and CLR (.NET and Mono) cross-platform language interop

Qb.Net by: viten-center

QueryBuilder allows you to create queries against a database, describing them as an object, without using tools such as LinqToSql, ORM, etc. and generate their SQL code in the syntax of the DBMS used

QLNet by: Andrea Maggiulli

A free/open-source library for quantitative finance

QRCoder by: Raffael Herrmann, Shane Krueger

QRCoder is a simple library, written in C#.NET, which enables you to create QR codes.

QuantConnect.Algorithm by: QuantConnect.Algorithm

QuantConnect LEAN Engine: Algorithm Project - Core QCAlgorithm implementation

QuantConnect.Algorithm.CSharp by: QuantConnect.Algorithm.CSharp

QuantConnect LEAN Engine: Algorithm.CSharp Project - A collection of C# algorithm demonstrations for how to use the API