Open source asp-net-core projects

Every project in the registry tagged asp-net-core, ranked by real GitHub adoption.

projects 12 combined stars ★ 40K refresh nightly
01 Notesnook ★ 15K

Zero-knowledge encrypted notes that sync across all devices

last push10 hours ago languageTypeScript licenseGPL-3.0
02 Umbraco-CMS ★ 5.3K

Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.

last push2 hours ago languageC# licenseMIT
03 radzen-blazor ★ 4.4K

Radzen Blazor is the most sophisticated free UI component library for Blazor, featuring 145+ native components including DataGrid, Scheduler, Charts, and advanc

last push5 hours ago languageC# licenseMIT
04 opentelemetry-dotnet ★ 3.8K

The OpenTelemetry .NET Client

last push9 hours ago languageC# licenseApache-2.0
05 squidex ★ 2.5K

Headless CMS and Content Managment Hub

last push18 hours ago languageC# licenseMIT
06 piranha.core ★ 2.2K

Piranha CMS is the friendly editor-focused CMS for .NET that can be used both as an integrated CMS or as a headless API.

last push6 days ago languageC# licenseMIT
07 FeatBit ★ 2.0K

Open-source feature flag management for seamless deployments

last push11 hours ago languageC# licenseMIT
08 fido2-net-lib ★ 1.5K

Passkeys, FIDO2 and WebAuthn .NET library.

last push5 days ago languageC# licenseMIT
09 mcp-gateway ★ 903

MCP Gateway is a reverse proxy and management layer for MCP servers, enabling scalable, session-aware stateful routing and lifecycle management of MCP servers i

last push3 days ago languageC# licenseMIT
10 cofoundry ★ 902

Cofoundry is an extensible and flexible .NET Core CMS & application framework focusing on code first development

last push9 months ago languageC# licenseMIT
11 mix.core ★ 888

🚀 A future-proof enterprise web CMS supporting both headless and decoupled approaches. Build any type of app with customizable APIs on ASP.NET Core/.NET Core.

last push9 months ago languageC# licenseMIT
12 FluentCMS ★ 569

ASP.NET Core Blazor Content Management System (CMS)

last push2 hours ago languageC# licenseMIT

Related tags

← all tags

Frequently asked questions

How many open source asp-net-core projects are there?

This registry tracks 12 projects tagged asp-net-core, with 39,694 GitHub stars between them. The most-adopted is Notesnook at 14,875 stars.

Are these asp-net-core projects free to use?

Yes — 12 of the 12 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which asp-net-core project should I choose?

The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.

Are these asp-net-core projects still maintained?

10 of the 12 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.