Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure. Learn more →
Top 23 C# ASP.NET Projects
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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DotNetGuide
🌈【C#/.NET/.NET Core学习、工作、面试指南】记录、收集和总结C#/.NET/.NET Core基础知识、学习路线、开发实战、编程技巧练习、学习视频、文章、书籍、项目框架、社区组织、开发必备工具、技术前沿周刊、常见面试题、面试须知、简历模板、人才招聘、以及自己在学习和工作中的一些微薄见解。希望能和大家一起学习,共同进步。如果本知识库能为您提供帮助,别忘了给予支持哦(关注、点赞、分享)💖。
Project mention: DotNetGuide: Comprehensive Resource for C#/.NET Mastery | news.ycombinator.com | 2024-08-07 -
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Orchard Core
Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.
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Hot Chocolate
Welcome to the home of the Hot Chocolate GraphQL server for .NET, the Strawberry Shake GraphQL client for .NET and Nitro the awesome Monaco based GraphQL IDE.
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ASP.NET MVC Boilerplate
.NET project templates with batteries included, providing the minimum amount of code required to get you going faster.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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Exceptionless: Free, easy to use and contribute to.
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Carter
Carter is framework that is a thin layer of extension methods and functionality over ASP.NET Core allowing code to be more explicit and most importantly more enjoyable.
Project mention: Building a Modular Monolith With Vertical Slice Architecture in .NET | dev.to | 2025-04-15I use Carter library for structuring Minimal APIs and MediatR for encapsulating application logic in command handlers:
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Smartstore
A modular, scalable and ultra-fast open-source all-in-one eCommerce platform built on ASP.NET Core 7
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cofoundry
Cofoundry is an extensible and flexible .NET Core CMS & application framework focusing on code first development
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notifo
Multi channel notification service for collaboration tools, e-commerce, news service and more.
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Havit.Blazor
Free Bootstrap 5 components for ASP.NET Blazor + optional enterprise-level stack for Blazor development (gRPC code-first, layered architecture, localization, auth, ...)
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That, plus:
* Echarts is about the only dependency in our project that I can upgrade - and be sure it never breaks anything. It is so well-thought in that regard. Upgrading for 3.x to 5.x? Sure! "npm update" and everything just keeps working smoothly. That is so refreshing to see these days. Unbelievable.
* It's both SSR-friendly and SPA-friendly. Being mostly vanilla-js, works seamlessly with both react/vue/apline AND with old-school rails/asp.net/php/whatever. Our app is pretty classic SSR (https://www.jitbit.com/) and I can construct my chart's JSON object on a server using some linq-queries and provide that to echarts.
* ...OR I can give it a reactive object from vue-based SPA. Dun matter, it just works.
* whenever we have to add some workarounds (like, showing hovering labels on a pie chart with a bold percentages or something) - I never have to dig into their sources. Almost anything has already been figured out. Easily googlable and "LLM-able".
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ProjectLighthouse
Project Lighthouse is a clean-room, open-source custom server for LittleBigPlanet.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
C# ASP.NET discussion
C# ASP.NET related posts
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Building a Modular Monolith With Vertical Slice Architecture in .NET
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After 1 Year, ASP.NET Core CodeBehind Framework
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Elanat CMS 2.2 Released - Under .NET Core
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Elanat Brings Web-Forms Back to ASP.NET Core!
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CodeBehind 2.6 Released
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Elanat CMS One Year Birthday
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Introduction of CodeBehind Framework
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A note from our sponsor - Stream
getstream.io | 17 Jul 2025
Index
What are some of the best open-source ASP.NET projects in C#? This list will help you:
# | Project | Stars |
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1 | nopCommerce | 9,687 |
2 | DotNetGuide | 8,808 |
3 | Ocelot | 8,580 |
4 | Orchard Core | 7,760 |
5 | Hot Chocolate | 5,522 |
6 | opentelemetry-dotnet | 3,514 |
7 | ASP.NET MVC Boilerplate | 3,457 |
8 | Exceptionless | 2,438 |
9 | Squidex | 2,413 |
10 | Carter | 2,299 |
11 | Smartstore | 1,360 |
12 | CSLA .NET | 1,307 |
13 | Virto Commerce | 1,257 |
14 | cofoundry | 890 |
15 | notifo | 822 |
16 | ASP.NET MVC Boilerplate Framework | 723 |
17 | Exceptionless | 567 |
18 | Havit.Blazor | 561 |
19 | dasblog-core | 479 |
20 | azure-signalr | 446 |
21 | dotnet-db-samples | 430 |
22 | ASP.NET SAML | 399 |
23 | ProjectLighthouse | 227 |