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# ASPnet Projects
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Don’t try to remember them all. Use a password manager. It stores your passwords safely. Some good ones are Bitwarden, LastPass, and 1Password.
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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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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.
I wanted to find a framework that already had all the Boiler code needed for a business application: menus, sections, graphs, users, etc. While searching for such a framework, we noticed the .Net frameworks https://aspnetboilerplate.com and https://abp.io, which already have a lot of things "out of the box". As far as I understand, both frameworks are being developed either by related teams, or even by one team. And the teams are from Turkey. The ASP.NET Boilerplate framework has legacy code from older versions of the .Net Framework. The newer ABP framework does not have legacy, it is on .Net Core. Both frameworks have a decent number of stars on github.
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Server GC is the default garbage collector for Asp.net Core.
> https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetco...
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I wanted to find a framework that already had all the Boiler code needed for a business application: menus, sections, graphs, users, etc. While searching for such a framework, we noticed the .Net frameworks https://aspnetboilerplate.com and https://abp.io, which already have a lot of things "out of the box". As far as I understand, both frameworks are being developed either by related teams, or even by one team. And the teams are from Turkey. The ASP.NET Boilerplate framework has legacy code from older versions of the .Net Framework. The newer ABP framework does not have legacy, it is on .Net Core. Both frameworks have a decent number of stars on github.
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Electron.NET
:electron: Build cross platform desktop apps with ASP.NET Core (Razor Pages, MVC, Blazor).
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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.
- Project mention: Learning TDD by doing: Acceptance testing with Umbraco's management API | dev.to | 2025-10-27
To create the API client, I used NSwagStudio. With this tool, I can consume the OpenAPI spec that Umbraco exposes and automatically generate a C# client. Although it didn't go perfectly, the generated client was very usable and Umbraco appears to have designed very nice and clear models and endpoints. The generated C# code couldn't compile right away, because for some reason it depended on a type FileResponse, which doesn't exist. Fortunately, creating an empty class was enough to make it work.
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Yeah I'm also moving over from Node into dotnet. The DX has been very nice with VSCode and EF Core is really one of the best ORMs in the market. Also the performance is fantastic.
For APIs I'm using FastEndpoints [1] and loving it. I'll probably end up switching to Minimal APIs once they have validation etc.
[1] https://fast-endpoints.com/
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aspnet-api-versioning
Provides a set of libraries which add service API versioning to ASP.NET Web API, OData with ASP.NET Web API, and ASP.NET Core.
This approach from the ASP.NET API Versioning library provides clear version reporting and flexible routing.
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- Project mention: Malleable software: Restoring user agency in a world of locked-down apps | news.ycombinator.com | 2025-06-10
https://serenity.is/
I am 50 years old with a few decades of experience.
For past four years I have been voluntarily paying for Serenity's commercial offering (called StartSharp) in order to support them, as well as to express my gratitude for saving my sanity.
I mean, technically I could do with their free and open source version, as it packs plenty enough of punch.
C# / typescript / asp.net core / Visual Studio / linux deployment friendly, also under docker / works well enough with Postgres
Long time HN lurker, registered today solely to convey this message.
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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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JsonApiDotNetCore
A framework for building JSON:API compliant REST APIs using ASP.NET and Entity Framework Core.
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razor
Compiler and tooling experience for Razor ASP.NET Core apps in Visual Studio, Visual Studio for Mac, and VS Code.
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Web Markup Minifier
The Web Markup Minifier (abbreviated WebMarkupMin) - a .NET library that contains a set of markup minifiers. The objective of this project is to improve the performance of web applications by reducing the size of HTML, XHTML and XML code.
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Plotly.Blazor
This library packages the well-known charting library plotly.js into a razor component that can be used in a Blazor project.
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SapphireDb
SapphireDb Server, a self-hosted, easy to use realtime database for Asp.Net Core and EF Core
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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).
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Git clone - that repo is too big : HELP!
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OTE one time emails
- A note from our sponsor - Stream getstream.io | 23 Dec 2025
Index
What are some of the best open-source ASPnet projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Bitwarden | 17,674 |
| 2 | ABP | 14,046 |
| 3 | AspNetCore.Docs | 13,038 |
| 4 | ASP.NET Boilerplate | 11,985 |
| 5 | nopCommerce | 9,911 |
| 6 | clean-code-dotnet | 7,567 |
| 7 | Electron.NET | 7,544 |
| 8 | NSwag | 7,239 |
| 9 | FastEndpoints | 5,745 |
| 10 | aspnet-api-versioning | 3,167 |
| 11 | BaGet | 2,727 |
| 12 | Serene | 2,667 |
| 13 | SmartStoreNET | 2,662 |
| 14 | Smartstore | 1,427 |
| 15 | CSLA .NET | 1,321 |
| 16 | DotVVM | 786 |
| 17 | JsonApiDotNetCore | 717 |
| 18 | razor | 705 |
| 19 | Gofer.NET | 562 |
| 20 | Web Markup Minifier | 490 |
| 21 | Plotly.Blazor | 412 |
| 22 | SapphireDb | 407 |
| 23 | Examine | 401 |
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