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Blazor

Build interactive web UIs with C#

★ 4.3

Build interactive web UIs using C# instead of JavaScript. Run in the browser via WebAssembly or on the server with SignalR.

35K
GitHub Stars
none
TypeScript
medium
Learning Curve
4.2
DX Score
Visit Website → Documentation GitHub

Pricing

Model
free
Free Tier
MIT licensed, part of ASP.NET Core
Paid
N/A

Features

  • ✓ C# in browser (WASM)
  • ✓ Server-side option
  • ✓ Component model
  • ✓ JS interop
  • ✓ .NET libraries in browser
  • ✓ Hot reload
  • ✓ Form handling
  • ✓ Routing

Pros

  • + C# full-stack
  • + No JavaScript required
  • + Share code with backend
  • + Strong typing
  • + Microsoft support

Cons

  • - WASM download size
  • - Limited ecosystem
  • - Debugging challenges
  • - Performance trade-offs

Best For

enterprise startup

Alternatives

ASP.NET Core ASP.NET Core React React Angular Angular
wasm csharp spa component-based