Softwr

Developer Tools · head to head

GNAT Pro vs Rollup

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
Rollup logo

Rollup

Web Development

JavaScript module bundler built for libraries

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Rollup has a free tier, so it costs nothing to try first.
  • Each has a real cost: GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes; Rollup slower than the Go and Rust bundlers that followed it, since it is written in JavaScript
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where GNAT Pro and Rollup differ
AttributeGNAT ProRollup
Starting priceOn requestFree
Pricing modelquoteOpen source, no licence fee
Free tierNoYes
PlatformsWebLinux, macOS, Windows
CategoryDeveloper ToolsWeb Development

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

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in GNAT Pro

Nothing recorded that Rollup does not also cover.

Only in Rollup

  • Tree shaking
  • Clean output
  • Multiple output formats
  • Plugin API

What people use each for

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

GNAT Pro

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

Rollup

  • Publishing a JavaScript library in several module formatsnot GNAT Pro
  • Builds where output size and cleanliness matter more than build speednot GNAT Pro
  • Producing ES module output for consumers who will bundle it themselvesnot GNAT Pro

Where each one falls short

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

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

Rollup

  • Slower than the Go and Rust bundlers that followed it, since it is written in JavaScript
  • Application concerns like dev servers and hot reloading are not its job, so app builds need Vite on top
  • Configuration for non-trivial applications gets verbose compared with tools that assume more

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Rollup

Free
  • RollupFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose Rollup if

  • You need tree shaking.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want clean output.
Rollup review

Questions people ask

Is GNAT Pro or Rollup better?
Neither clearly leads. GNAT Pro starts at On request and Rollup at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Rollup?
Rollup has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Rollup.
Does GNAT Pro or Rollup run on more platforms?
GNAT Pro runs on Web. Rollup runs on Linux, macOS, Windows.
Can I use Rollup for free?
Yes. Rollup has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is GNAT Pro best used for?
GNAT Pro is most often used for building certified avionics software meeting do-178b/c standards, developing automotive embedded systems with iso-26262 compliance, integrating ada, c/c++, and rust components in single codebase, managing software supply chain vulnerabilities and sboms. Of those, building certified avionics software meeting do-178b/c standards and developing automotive embedded systems with iso-26262 compliance are not what Rollup is typically brought in for.
What can GNAT Pro do that Rollup cannot?
Rollup covers Tree shaking, Clean output, Multiple output formats, Plugin API.

Answered from the vendors’ own pages

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
Rollup: Is Rollup free?

Yes, open source under the MIT licence.

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
Rollup: Rollup or webpack?

Rollup is the usual choice for libraries thanks to cleaner output and better tree shaking. webpack remains stronger for complex applications with heavy asset handling.

Rollup: Do I need Rollup if I use Vite?

Not directly. Vite uses Rollup for production builds, so you already benefit from it.

Share

Related pages

More on GNAT Pro

More on Rollup

Keep looking

Other head to heads