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Developer Tools · head to head

GNAT Pro vs Microsoft SQL Server

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
Microsoft SQL Server logo

Microsoft SQL Server

Databases

Enterprise-grade relational database management system

From
Free
Free plan
Yes
Visit Microsoft SQL ServerFull review

The short version

  • Microsoft SQL Server is a relational database management system.
  • Microsoft SQL Server starts at $3945/mo; GNAT Pro prices on request.
  • Where GNAT Pro falls short: no pricing published on website; requires contacting AdaCore directly for quotes.
  • Where Microsoft SQL Server falls short: performance monitoring toolset is insufficient for hybrid cloud environments requiring real-time analytics across multiple deployment types.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which GNAT Pro and Microsoft SQL Server actually diverge.

Attributes where GNAT Pro and Microsoft SQL Server differ
AttributeGNAT ProMicrosoft SQL Server
Starting priceOn requestFree
Free tierNoYes
PlatformsWebWindows, Linux, Self-hosted, Azure
CategoryDeveloper ToolsDatabases

Not yet recorded: pricing model for Microsoft SQL Server, 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 Microsoft SQL Server does not also cover.

Only in Microsoft SQL Server

  • T-SQL
  • ACID Compliance
  • Advanced Security
  • In-memory OLTP
  • Columnstore Indexes
  • Always On Availability
  • Machine Learning Services
  • Azure

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

Microsoft SQL Server

  • 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

Microsoft SQL Server

  • Licensing and on-premises deployment costs are high compared to open-source alternatives, with Enterprise Edition exceeding $60,000 for minimum core requirements
  • Performance monitoring toolset is insufficient for hybrid cloud environments requiring real-time analytics across multiple deployment types
  • Heavy I/O resource consumption can saturate disk volumes and degrade performance when processing large transaction workloads
  • Always On availability groups with up to 8 secondary replicas are limited to Enterprise edition only; Standard supports only basic availability groups with 2 replicas
  • CPU and memory scaling is capped at 4 sockets or 32 cores on Standard edition, limiting deployments requiring higher compute capacity

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Microsoft SQL Server

Free
  • ExpressFree
    • 4 cores maximum
    • 1.4 GB memory per instance
    • 50 GB database size limit
  • DeveloperFree
    • All Enterprise features
    • Non-production use only
  • Standard$3,945
    • 32 core maximum per instance
    • 256 GB buffer pool memory
    • Basic availability groups with 2 replicas
  • Enterprise$15,123
    • Unlimited scaling
    • Always On with up to 8 secondaries
    • Advanced security and HA features

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose Microsoft SQL Server if

  • You need t-sql.
  • You want to start without paying.
  • You work on Windows, Linux, Self-hosted, Azure.
  • You also want acid compliance.
Microsoft SQL Server review

Questions people ask

Is GNAT Pro or Microsoft SQL Server better?
Neither clearly leads. GNAT Pro starts at On request and Microsoft SQL Server at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Microsoft SQL Server?
Microsoft SQL Server has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Microsoft SQL Server.
Does GNAT Pro or Microsoft SQL Server run on more platforms?
GNAT Pro runs on Web. Microsoft SQL Server runs on Windows, Linux, Self-hosted, Azure.
Can I use Microsoft SQL Server for free?
Yes. Microsoft SQL Server 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 Microsoft SQL Server is typically brought in for.
What can GNAT Pro do that Microsoft SQL Server cannot?
Microsoft SQL Server covers T-SQL, ACID Compliance, Advanced Security, In-memory OLTP.

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
Microsoft SQL Server: What is the pricing model for SQL Server?

SQL Server uses core-based licensing with per-2-core pack pricing. Enterprise Edition costs approximately $15,123 per 2-core pack (minimum 8 cores). Standard Edition costs approximately $3,945 per 2-core pack. Developer and Express editions are free. Software Assurance adds 25-35% annually for upgrades and support.

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
Microsoft SQL Server: Does SQL Server run on Linux?

Yes. SQL Server 2017 and later run on Linux (Red Hat Enterprise Linux, SUSE Linux Enterprise Server, Ubuntu), Docker containers, and Windows with feature parity including Always On availability groups, Active Directory authentication, and encryption.

Source
Microsoft SQL Server: Is there a free edition of SQL Server?

Yes. SQL Server Express is free and includes all functionality of Enterprise edition for development and testing, with limits of 4 cores, 1,410 MB memory per instance, and 50 GB per database. Developer edition is also free for non-production use.

Source
Microsoft SQL Server: Can SQL Server be deployed offline?

Yes. SQL Server can be installed from offline media on machines without internet access. Microsoft provides complete offline installation packages for SQL Server, SSMS, and supporting components, making deployment in isolated or air-gapped environments feasible.

Source
Microsoft SQL Server: What high availability options does SQL Server provide?

SQL Server offers Always On availability groups (Enterprise only), Always On failover cluster instances, database mirroring, log shipping, and for disaster recovery, failover servers in Azure and Accelerated Database Recovery for faster recovery after failures.

Source
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