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Best Open Source dotnet core Libraries

A curated list of the most popular GitHub repositories tagged with dotnet core. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1dotnet/core

.NET news, announcements, release notes, and more!

21,898PowerShell
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#2thangchung/awesome-dotnet-core

:honeybee: A collection of awesome .NET core libraries, tools, frameworks and software

21,097C#
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#3MoienTajik/AspNetCore-Developer-Roadmap

Roadmap to becoming an ASP.NET Core developer in 2026

19,537
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#4bitwarden/server

Bitwarden infrastructure/backend (API, database, Docker, etc).

18,082C#
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#5dotnet/corefx

This repo is used for servicing PR's for .NET Core 2.1 and 3.1. Please visit us at https://github.com/dotnet/runtime

17,534
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#6dotnet/efcore

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

14,589C#
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#7abpframework/abp

Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.

14,163C#
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#8QuestPDF/QuestPDF

QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.

13,821C#
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#9streetwriters/notesnook

A fully open source & end-to-end encrypted note taking alternative to Evernote.

13,705TypeScript
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#10dotnet/coreclr

CoreCLR is the runtime for .NET Core. It includes the garbage collector, JIT compiler, primitive data types and low-level classes.

12,777
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#11nopSolutions/nopCommerce

ASP.NET Core eCommerce software. nopCommerce is a free and open-source shopping cart.

9,983C#
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#12studyzy/imewlconverter

”深蓝词库转换“ 一款开源免费的输入法词库转换程序

9,686C#
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#13reactiveui/refit

The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.

9,397C#
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#14AdrienTorris/awesome-blazor

Resources for Blazor, a .NET web framework using C#/Razor and HTML that runs in the browser with WebAssembly.

9,308
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#15Elfocrash/.NET-Backend-Developer-Roadmap

Roadmap for a .NET Backend Developer working with Microservices

6,834
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