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Top 23 C# Netcore Projects
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ReSharper
ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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Project mention: Quest for Permissively Licensed PDF Library in C# | news.ycombinator.com | 2025-11-04
It seems the PDFSharp rabbit hole goes even deeper than I've realized!
Latest MigraDoc & PDFSharp seem to have been updated and ported to .NET 6 after a lot of the forks happened, so it was unclear to me whether there's merits in looking at other, mostly abandoned forks.
I might add PdfSharpCore, though the use of SixLabors.ImageSharp and SixLabors.Fonts leads to a disqualification from the "quest", given their custom split license [1]
[1] https://github.com/SixLabors/ImageSharp/blob/main/LICENSE
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MQTTnet
MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.
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Radzen Blazor Components
Radzen Blazor is a set of 70+ free native Blazor UI components packed with DataGrid, Scheduler, Charts and robust theming including Material design and FluentUI.
Sure, why not use Blazor? It makes life easier for the developers who are primarily backend, to work on the frontend as well. Seems like the better choice. So what's next? The UI library. No shade to the long-time standing Bootstrap, but it's 2023 and there are so many other libraries one could use outside of Bootstrap; TailwindCSS, Bulma, Materialize CSS, just to name a few. Forget that for a minute, maybe we can use a Blazor component library to speed up development; there are a few in the market: MudBlazor, Telerik, Syncfusion, Radzen. Ultimately, we go with what we already have a license for, Telerik.
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Project mention: Minimal .NET LLM Observability: Reproduce Timeouts and Triage in 15 Minutes | dev.to | 2026-03-01
OpenTelemetry .NET
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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dotnet
.NET Community Toolkit is a collection of helpers and APIs that work for all .NET developers and are agnostic of any specific UI platform. The toolkit is maintained and published by Microsoft, and part of the .NET Foundation. (by CommunityToolkit)
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Blazorise
Blazorise is a component library built on top of Blazor with support for CSS frameworks like Bootstrap, Tailwind, Bulma, AntDesign, and Material.
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Project mention: How to implement “CreatedAt” and “UpdatedAt” timestamps in Entity Framework Core? | dev.to | 2026-02-19
Audit.NET -- a dedicated library for comprehensive audit implementation.
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abot
Cross Platform C# web crawler framework built for speed and flexibility. Please star this project! +1.
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aws-lambda-dotnet
Libraries, samples and tools to help .NET Core developers develop AWS Lambda functions.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# Netcore discussion
C# Netcore related posts
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Mistakes Were Made
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📝 Beyond WithXyz().Build(): Taking the Fluent Builder Pattern Further in C# (.NET 9)
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I Deployed a .NET App Without DevOps Headaches — Here's How
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Mastering Dependency Injection: Effective Ways to Inject Dependencies in C#
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TeeChart in a MudBlazor web
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MudBlazor: Streamlined Blazor Components with Material Design for .NET Devs
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MudBlazor 7.0 component library released
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A note from our sponsor - ReSharper
www.jetbrains.com | 12 Jun 2026
Index
What are some of the best open-source Netcore projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | PowerShell | 53,856 |
| 2 | ImageSharp | 7,991 |
| 3 | ServiceStack | 5,498 |
| 4 | MQTTnet | 5,004 |
| 5 | Autofac | 4,647 |
| 6 | Radzen Blazor Components | 4,250 |
| 7 | opentelemetry-dotnet | 3,709 |
| 8 | dotnet | 3,692 |
| 9 | EventSourcing.NetCore | 3,672 |
| 10 | Oxyplot | 3,530 |
| 11 | Blazorise | 3,527 |
| 12 | Discord.Net | 3,497 |
| 13 | BruteShark | 3,345 |
| 14 | Audit.NET | 2,624 |
| 15 | EventFlow | 2,560 |
| 16 | abot | 2,306 |
| 17 | NLua | 2,234 |
| 18 | ImGui.NET | 2,227 |
| 19 | EPPlus | 2,024 |
| 20 | AspectCore Framework | 1,764 |
| 21 | aws-lambda-dotnet | 1,661 |
| 22 | RazorLight | 1,651 |
| 23 | NetCodeTop | 1,561 |
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ReSharper is now available in VS Code and Cursor
ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
www.jetbrains.com