Blazor Server

Microsoft's server-side Blazor hosting model, which runs C# Razor components inside ASP.NET Core and streams UI updates to the browser.

Visit Blazor Server ↗

Adoption1 site

Ranked 6 of 12 in Compiled-to-Web & WebAssembly0.7% of the 137 tracked sites using Compiled-to-Web & WebAssembly

Pricing: open-source

About Blazor Server

Under Blazor Server, components run on the server, and UI updates, event handling and JavaScript calls travel to the browser over a SignalR connection. Microsoft's docs list the cost of that design: every user interaction involves a network hop, and there's no offline support.

Sources: ASP.NET Core Blazor hosting models, Blazor · Checked 16 Oct 2026

Websites using Blazor Server

mycelis.ai

Who added or dropped it

No switches yet. We rescan every site monthly, and any site that adds or drops Blazor Server shows up here.

Often used with

ASP.NET100%
ASP.NET Core100%

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