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GNAT Pro vs VIVOTEK VAST Security Station

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
VIVOTEK VAST Security Station logo

VIVOTEK VAST Security Station

Cybersecurity

Camera-vendor video management software with a free 32-channel tier for VIVOTEK devices

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Each has a real cost: GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes; VIVOTEK VAST Security Station vAST 2 has entered end of maintenance with technical support and software files withdrawn, yet distributors still list VAST 2 licences, so a buyer can be quoted unsupported software without realising it.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which GNAT Pro and VIVOTEK VAST Security Station actually diverge.

Attributes where GNAT Pro and VIVOTEK VAST Security Station differ
AttributeGNAT ProVIVOTEK VAST Security Station
Pricing modelquoteOne-time purchase per camera channel
PlatformsWebWindows, Web, iOS, Android
CategoryDeveloper ToolsCybersecurity

Identical on both: starting price (On request), free tier (No), 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 VIVOTEK VAST Security Station does not also cover.

Only in VIVOTEK VAST Security Station

  • VSS Lite free tier
  • Per-channel licensing
  • Third-party camera support
  • Failover and TV matrix
  • Vision object analytics
  • Embedded NVR licensing
  • NDAA and TAA compliance

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

VIVOTEK VAST Security Station

  • A school or small public building with fewer than 32 VIVOTEK cameras that needs a VMS at no licence costnot GNAT Pro
  • A United States public sector site that must meet NDAA and TAA procurement restrictionsnot GNAT Pro
  • An existing VAST 2 site that needs to migrate before the software falls further out of maintenancenot GNAT Pro
  • A mid-sized site standardising on VIVOTEK hardware with a handful of third-party cameras to absorbnot 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

VIVOTEK VAST Security Station

  • VAST 2 has entered end of maintenance with technical support and software files withdrawn, yet distributors still list VAST 2 licences, so a buyer can be quoted unsupported software without realising it.
  • The free Lite tier is hard capped at 32 cameras and VIVOTEK devices only, so a site that grows to 33 cameras or adds one third-party camera moves straight to paid Standard licensing.
  • VSS Professional includes no camera licences at all, so the edition that large deployments need starts from a higher effective price than the tier comparison suggests.
  • It is a camera manufacturer's VMS, so the third-party device list, analytics ecosystem and integration catalogue are all narrower than an independent platform like Milestone or Salient.
  • No pricing is published for Standard or Professional channels; everything runs through distribution, which makes budgeting a phased expansion difficult without repeated quotes.

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

VIVOTEK VAST Security Station

On request
  • VSS LiteFree
    • Free of charge
    • Up to 32 VIVOTEK cameras per server
    • No third-party camera support
  • VSS Standard$undefined/one-time
    • Up to 256 cameras per server
    • Eight camera licences included for VIVOTEK or third-party devices
    • Additional channel licences purchased individually
  • VSS Professional$undefined/one-time
    • Large scale deployments with failover and TV matrix
    • No camera licences included at all
    • Every channel purchased or upgraded from Standard

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose VIVOTEK VAST Security Station if

  • You need vss lite free tier.
  • You work on Windows, Web, iOS, Android.
  • You also want per-channel licensing.
VIVOTEK VAST Security Station review

Questions people ask

Is GNAT Pro or VIVOTEK VAST Security Station better?
Neither clearly leads. GNAT Pro starts at On request and VIVOTEK VAST Security Station at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or VIVOTEK VAST Security Station?
GNAT Pro starts at On request and VIVOTEK VAST Security Station at On request.
Does GNAT Pro or VIVOTEK VAST Security Station run on more platforms?
GNAT Pro runs on Web. VIVOTEK VAST Security Station runs on Windows, Web, iOS, Android.
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 VIVOTEK VAST Security Station is typically brought in for.
What can GNAT Pro do that VIVOTEK VAST Security Station cannot?
VIVOTEK VAST Security Station covers VSS Lite free tier, Per-channel licensing, Third-party camera support, Failover and TV matrix.

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
VIVOTEK VAST Security Station: Should I still buy VAST 2?

No. VAST 2 has entered end of maintenance with support and software files withdrawn. VSS is the current product, and any VAST 2 licence still on a distributor price list should be questioned.

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
VIVOTEK VAST Security Station: Is VSS Lite really free?

Yes, for up to 32 VIVOTEK cameras per server. It does not support third-party cameras and cannot exceed 32 channels.

VIVOTEK VAST Security Station: How many licences come with Standard?

Eight camera licences, usable for VIVOTEK or third-party devices. Professional includes none.

VIVOTEK VAST Security Station: Is VIVOTEK NDAA compliant?

VIVOTEK publishes an NDAA and TAA compliant product list, which is why it appears in United States public sector specifications where Section 889 excludes several other manufacturers.

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