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GNAT Pro vs PostgreSQL

GNAT Pro logo

GNAT Pro

Developer Tools

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

From
On request
Free plan
No
Visit GNAT ProFull review
PostgreSQL logo

PostgreSQL

Databases

Open source relational database

From
Free
Free plan
Yes
Visit PostgreSQLFull review

The short version

  • PostgreSQL is a powerful, open source object-relational database system.
  • PostgreSQL is free; GNAT Pro prices on request.
  • Where GNAT Pro falls short: no pricing published on website; requires contacting AdaCore directly for quotes.
  • Where PostgreSQL falls short: requires manual scaling across multiple machines for very large deployments.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

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

Attributes where GNAT Pro and PostgreSQL differ
AttributeGNAT ProPostgreSQL
Starting priceOn requestFree
Free tierNoYes
PlatformsWebLinux, Windows, macOS
CategoryDeveloper ToolsDatabases

Not yet recorded: pricing model for PostgreSQL, founded for GNAT Pro.

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 PostgreSQL does not also cover.

Only in PostgreSQL

  • ACID Compliance
  • JSON/JSONB Support
  • Full-text Search
  • Extensibility
  • Advanced Indexing
  • Partitioning
  • Replication
  • pgAdmin

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

PostgreSQL

  • Transaction processingnot GNAT Pro
  • Data storagenot GNAT Pro
  • Application backendnot GNAT Pro
  • Reportingnot GNAT Pro
  • Data analyticsnot 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

PostgreSQL

  • Requires manual scaling across multiple machines for very large deployments
  • Performance tuning requires deep knowledge of database internals
  • No built-in graphical admin interface; command-line tools are primary method

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

PostgreSQL

Free

No published plan breakdown. See the PostgreSQL review.

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose PostgreSQL if

  • You need acid compliance.
  • You want to start without paying.
  • You work on Linux, Windows, macOS.
  • You also want json/jsonb support.
PostgreSQL review

Questions people ask

Is GNAT Pro or PostgreSQL better?
Neither clearly leads. GNAT Pro starts at On request and PostgreSQL at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or PostgreSQL?
PostgreSQL has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for PostgreSQL.
Does GNAT Pro or PostgreSQL run on more platforms?
GNAT Pro runs on Web. PostgreSQL runs on Linux, Windows, macOS.
Can I use PostgreSQL for free?
Yes. PostgreSQL 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 PostgreSQL is typically brought in for.
What can GNAT Pro do that PostgreSQL cannot?
PostgreSQL covers ACID Compliance, JSON/JSONB Support, Full-text Search, Extensibility.

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
PostgreSQL: Is PostgreSQL completely free?

Yes. PostgreSQL is completely free and open source with no licensing fees or restrictions on use.

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
PostgreSQL: What platforms does PostgreSQL run on?

PostgreSQL runs on all major operating systems including Linux, Windows, macOS, BSD, and commercial Unix variants, and has been proven highly scalable managing terabytes to petabytes of data.

Source
PostgreSQL: What procedural languages are supported?

PostgreSQL supports stored functions and procedures in multiple languages including PL/pgSQL, Perl, Python, Tcl, Java, JavaScript, R, and Rust.

Source
PostgreSQL: What is ACID compliance in PostgreSQL?

PostgreSQL has been ACID-compliant since 2001, ensuring data integrity through atomicity, consistency, isolation, and durability guarantees for all transactions.

Source
PostgreSQL: Does PostgreSQL support JSON data?

Yes. PostgreSQL supports JSON and JSONB data types for storing and querying JSON documents, along with XML and other document formats.

Source
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