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Developer Tools · head to head

GNAT Pro vs WireGuard

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
WireGuard logo

WireGuard

Cybersecurity

Modern, minimal-complexity VPN protocol with state-of-the-art cryptography

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only WireGuard 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; WireGuard manual key management required; WireGuard does not provide automated peer discovery or key distribution mechanisms
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where GNAT Pro and WireGuard differ
AttributeGNAT ProWireGuard
Starting priceOn requestFree
Pricing modelquoteopen-source
Free tierNoYes
PlatformsWebLinux, Windows, macOS, iOS, Android, FreeBSD, OpenBSD
CategoryDeveloper ToolsCybersecurity

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

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

WireGuard

  • Site-to-site VPN connectivity for datacentres and branch officesnot GNAT Pro
  • High-performance VPN applications requiring minimal latency and CPU overheadnot GNAT Pro
  • Embedded systems and IoT devices with strict memory and storage constraintsnot GNAT Pro
  • WireGuard-based managed services (Tailscale, Mullvad VPN) providing abstraction over raw protocolnot GNAT Pro
  • Kernel module for Linux-based VPN appliances and firewallsnot GNAT Pro
  • Research and development in cryptographic protocol designnot 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

WireGuard

  • Manual key management required; WireGuard does not provide automated peer discovery or key distribution mechanisms
  • No built-in support for address allocation or DHCP; all IP assignments must be manually configured
  • Limited to UDP; TCP encapsulation requires wrapper tools, making it unsuitable for environments blocking UDP
  • Stateless protocol design means lost packets trigger peer disconnection rather than transparent reconnection
  • Requires operational expertise to securely configure and deploy; not suitable for non-technical users without wrapper tools (Tailscale, Mullvad)

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

WireGuard

Free

No published plan breakdown. See the WireGuard review.

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose WireGuard if

  • You want to start without paying.
  • You work on Linux, Windows, macOS, iOS, Android, FreeBSD, OpenBSD.
WireGuard review

Questions people ask

Is GNAT Pro or WireGuard better?
Neither clearly leads. GNAT Pro starts at On request and WireGuard at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or WireGuard?
WireGuard has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for WireGuard.
Does GNAT Pro or WireGuard run on more platforms?
GNAT Pro runs on Web. WireGuard runs on Linux, Windows, macOS, iOS, Android, FreeBSD, OpenBSD.
Can I use WireGuard for free?
Yes. WireGuard 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 WireGuard is typically brought in for.

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
WireGuard: Is WireGuard free?

Yes, WireGuard is free and open-source software. The Linux kernel module is licensed under GPLv2; implementations for other platforms use MIT or Apache 2.0 licences. There are no licensing fees.

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
WireGuard: How does WireGuard differ from IPsec and OpenVPN?

WireGuard replaces complex negotiation protocols and state machines with simple public-key cryptography. Its code is roughly 100 times smaller than IPsec, making it faster to audit, deploy, and maintain. It uses modern cryptographic primitives rather than legacy algorithms.

Source
WireGuard: Can I use WireGuard for a commercial VPN service?

Yes. Several commercial VPN services (Mullvad, IVPN, ProtonVPN) use WireGuard as their underlying protocol. You must implement peer management, key distribution, and endpoint selection on top of the WireGuard protocol.

Source
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