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Developer Tools · head to head

GNAT Pro vs Osano

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
Osano logo

Osano

Cybersecurity

Consent management and data privacy platform with a published self-serve tier

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Osano 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; Osano the published visitor ceilings are low, with the paid self-serve tier stopping around 30,000 monthly visitors, so any consumer facing site with real traffic leaves published pricing immediately and negotiates a quote with no public anchor.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

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

Attributes where GNAT Pro and Osano differ
AttributeGNAT ProOsano
Starting priceOn requestFree
Pricing modelquotePer month by monthly website visitors
Free tierNoYes
CategoryDeveloper ToolsCybersecurity

Identical on both: platforms (Web), 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 Osano does not also cover.

Only in Osano

  • Consent banner
  • Pre-consent tag blocking
  • Consent record
  • No fines guarantee
  • Subject rights requests
  • Data mapping
  • Vendor privacy monitoring
  • Cookie scanning

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 Osano
  • Developing automotive embedded systems with ISO-26262 compliancenot Osano
  • Integrating Ada, C/C++, and Rust components in single codebasenot Osano
  • Managing software supply chain vulnerabilities and SBOMsnot Osano
  • Supporting long-lived software systems spanning decadesnot Osano

Osano

  • A mid market company selling into the EU and California that needs one banner honouring different consent rules by visitor regionnot GNAT Pro
  • A privacy counsel who wants a vendor that will contractually stand behind its consent product rather than disclaim all liabilitynot GNAT Pro
  • A marketing team that needs Google Consent Mode signals wired correctly so analytics and ads degrade rather than break when consent is refusednot GNAT Pro
  • A company with a handful of brand domains wanting one consent record and one scanning schedule across all of themnot 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

Osano

  • The published visitor ceilings are low, with the paid self-serve tier stopping around 30,000 monthly visitors, so any consumer facing site with real traffic leaves published pricing immediately and negotiates a quote with no public anchor.
  • The no fines guarantee is bounded and conditional on configuring the product as instructed, so it is a marketing differentiator with an indemnity cap rather than the insurance policy the name suggests, and the limits should be read before it influences a decision.
  • Everything beyond consent, including subject rights automation, data mapping and vendor monitoring, is enterprise quoted, so the transparent pricing that attracts buyers covers only the cheapest part of the platform.
  • Tag blocking depends on tags being loaded through the mechanisms Osano can intercept, and marketing teams that inject scripts directly into templates or through server side tagging routinely leak trackers past the banner without anyone noticing.
  • It is a privacy platform rather than a security compliance one, so organisations that also need SOC 2 or ISO 27001 evidence collection run it alongside a separate tool and duplicate parts of the vendor and asset inventory.

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Osano

Free
  • FreeFree
    • 1 user
    • 1 domain
    • 5,000 monthly visitors
  • Plus$199/month
    • 2 users
    • 3 domains
    • 30,000 monthly visitors
  • Enterprise$undefined/year
    • Unlimited domains and higher visitor volumes
    • Subject rights request automation
    • Data mapping and assessments

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose Osano if

  • You need consent banner.
  • You want to start without paying.
  • You also want pre-consent tag blocking.
Osano review

Questions people ask

Is GNAT Pro or Osano better?
Neither clearly leads. GNAT Pro starts at On request and Osano at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Osano?
Osano has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Osano.
Does GNAT Pro or Osano run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Osano for free?
Yes. Osano 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 Osano is typically brought in for.
What can GNAT Pro do that Osano cannot?
Osano covers Consent banner, Pre-consent tag blocking, Consent record, No fines guarantee.

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
Osano: Does the free tier include the no fines guarantee?

No. The guarantee attaches to paid use of the consent product, and the free tier is capped at one domain and 5,000 monthly visitors.

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
Osano: How is Osano priced?

By monthly website visitors, number of domains and tier. The self-serve path stops at a low visitor ceiling and everything above is quoted.

Osano: Can it handle US state privacy laws as well as GDPR?

Yes, with region aware rule sets covering GDPR, ePrivacy and the US state regimes, so an EU visitor sees an opt-in banner and a US visitor sees the applicable opt-out.

Osano: Does Osano do subject access requests?

Yes, but in the enterprise tier rather than the published plans, and it is quoted separately from consent.

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