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.NET vs GNAT Pro

.NET logo

.NET

Web Development

Free, cross-platform, open source developer platform

From
Free
Free plan
Yes
Full reviewWebsite
GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only .NET has a free tier, so it costs nothing to try first.
  • 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; GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which .NET and GNAT Pro actually diverge.

Attributes where .NET and GNAT Pro differ
Attribute.NETGNAT Pro
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
CategoryWeb DevelopmentDeveloper Tools

Identical on both: platforms (Web), user rating (Not yet rated).

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 GNAT Pro
  • Cloud-native application development for Azurenot GNAT Pro
  • Mobile and desktop apps with .NET MAUI cross-platform frameworknot GNAT Pro
  • AI and machine learning applications using C#not GNAT Pro

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot .NET
  • Developing automotive embedded systems with ISO-26262 compliancenot .NET
  • Integrating Ada, C/C++, and Rust components in single codebasenot .NET
  • Managing software supply chain vulnerabilities and SBOMsnot .NET
  • Supporting long-lived software systems spanning decadesnot .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

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

Pricing, plan by plan

.NET

Free

No published plan breakdown. See the .NET review.

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Which should you pick?

Choose .NET if

  • You want to start without paying.
.NET review

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from .NET on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Questions people ask

Is .NET or GNAT Pro better?
Neither clearly leads. .NET starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, .NET or GNAT Pro?
.NET has a free tier; the other does not. Paid plans start at Free for .NET and On request for GNAT Pro.
Does .NET or GNAT Pro run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use .NET for free?
Yes. .NET has a free tier, so you can try it without paying. GNAT Pro starts at On request.
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 GNAT Pro 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
GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

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
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

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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