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.NET vs Express.js

.NET logo

.NET

Web Development

Free, cross-platform, open source developer platform

From
Free
Rated
-
Full reviewWebsite
Express.js logo

Express.js

Web Development

Fast, unopinionated, minimalist web framework for Node.js

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: .NET .NET 8 and .NET 9 both reach end of support on 10 November 2026, per dotnet.microsoft.com/en-us/platform/support/policy (Aug 2026), forcing an upgrade to .NET 10 by that date; Express.js governed by the OpenJS Foundation with no vendor or paid tier, per expressjs.com; as open source software it has no pricing to compare
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which .NET and Express.js actually diverge.

Attributes where .NET and Express.js differ
Attribute.NETExpress.js

Identical on both: starting price (Free), pricing model (open-source), free tier (Yes), platforms (Web), user rating (Not yet rated), category (Web Development).

What people use each for

The jobs each tool is most often brought in to do.

.NET

  • Web development with ASP.NET Core and Entity Frameworknot Express.js
  • Cloud-native application development for Azurenot Express.js
  • Mobile and desktop apps with .NET MAUI cross-platform frameworknot Express.js
  • AI and machine learning applications using C#not Express.js

Express.js

  • Web server and API developmentnot .NET
  • REST API creationnot .NET
  • Backend application developmentnot .NET
  • Node.js web applicationsnot .NET

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

.NET

  • .NET 8 and .NET 9 both reach end of support on 10 November 2026, per dotnet.microsoft.com/en-us/platform/support/policy (Aug 2026), forcing an upgrade to .NET 10 by that date
  • Standard Term Support releases get only 2 years of patches versus 3 years for Long Term Support releases, per Microsoft's own support policy page, so teams on an STS release face a shorter upgrade cycle

Express.js

  • Governed by the OpenJS Foundation with no vendor or paid tier, per expressjs.com; as open source software it has no pricing to compare
  • Express.js provides only a thin layer of fundamental routing features by its own description, requiring separate middleware modules for functionality like body parsing, sessions or authentication

Pricing, plan by plan

.NET

Free

No published plan breakdown. See the .NET review.

Express.js

Free

No published plan breakdown. See the Express.js review.

Which should you pick?

Choose .NET if

  • You want to start without paying.
.NET review

Choose Express.js if

  • You want to start without paying.
Express.js review

Questions people ask

Is .NET or Express.js better?
Neither clearly leads. .NET starts at Free and Express.js at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, .NET or Express.js?
.NET starts at Free and Express.js at Free.
Does .NET or Express.js run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use .NET for free?
Both have a free tier, so you can try either at no cost before committing.
What is .NET best used for?
.NET is most often used for web development with asp.net core and entity framework, cloud-native application development for azure, mobile and desktop apps with .net maui cross-platform framework, ai and machine learning applications using c#. Of those, web development with asp.net core and entity framework and cloud-native application development for azure are not what Express.js is typically brought in for.

Answered from the vendors’ own pages

.NET: Is .NET free to use?

Yes. .NET is completely free and open-source, available on GitHub.

Source
Express.js: Is Express.js free?

Yes, Express.js is completely free and open source. The framework is maintained by the OpenJS Foundation and available via npm at no cost. Installation is as simple as running npm install express.

Source
.NET: What platforms does .NET support?

.NET supports Windows, Linux, macOS, and Docker. A single C# codebase can run across multiple platforms including iOS, Android, and cloud environments.

Source
Express.js: Does Express.js offer commercial support?

Express.js itself is free with no official commercial support from the project. Community support is available through documentation and community resources at no cost. Third-party vendors may offer commercial support services, though none are listed on the official website.

Source
.NET: How large is the .NET ecosystem?

NuGet provides 390,000+ unique packages with 50,000+ new packages added annually. .NET has 474K+ GitHub stars and active community support across multiple platforms.

Source
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