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
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# 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 |
|---|---|---|
| 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 |
Sponsored
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.
getstream.io