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Development Tools · head to head

Deno vs .NET

D

Deno

Development Tools

A fast, open-source, fully Node-compatible JS runtime with TypeScript baked right in

From
Free
Rated
-
Full reviewWebsite
.

.NET

Web Development

Free, cross-platform, open source developer platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Deno the runtime itself is MIT licensed per the project's GitHub repository (denoland/deno LICENSE.md) with no cost, but Deno Deploy's free tier caps at 1 million requests and 15 CPU hours per month, per deno.com/deploy/pricing (Aug 2026); .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

Where they differ

Only the attributes on which Deno and .NET actually diverge.

Attributes where Deno and .NET differ
AttributeDeno.NET
Pricing modelfreemiumopen-source
CategoryDevelopment ToolsWeb Development

Identical on both: starting price (Free), free tier (Yes), platforms (Web), user rating (Not yet rated).

Where each one falls short

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

Deno

  • The runtime itself is MIT licensed per the project's GitHub repository (denoland/deno LICENSE.md) with no cost, but Deno Deploy's free tier caps at 1 million requests and 15 CPU hours per month, per deno.com/deploy/pricing (Aug 2026)
  • Deno Deploy Pro at $20 per month charges $2 per additional million requests and $0.05 per additional CPU hour once the included quota is exceeded, per deno.com/deploy/pricing

.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

Pricing, plan by plan

Deno

Free

No published plan breakdown. See the Deno review.

.NET

Free

No published plan breakdown. See the .NET review.

Which should you pick?

Choose Deno if

  • You want to start without paying.
Deno review

Choose .NET if

  • You want to start without paying.
.NET review

Questions people ask

Is Deno or .NET better?
Neither clearly leads. Deno starts at Free and .NET at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Deno or .NET?
Deno starts at Free and .NET at Free.
Does Deno or .NET run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Deno for free?
Both have a free tier, so you can try either at no cost before committing.
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