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Cybersecurity · head to head

Qualys VMDR vs Rust

Qualys VMDR logo

Qualys VMDR

Cybersecurity

Cloud-delivered vulnerability management licensed per asset, using scanner appliances and a lightweight agent.

From
$3/month
Free plan
No
Full reviewWebsite
Rust logo

Rust

Developer Tools

A language empowering everyone to build reliable and efficient software

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Rust has a free tier, so it costs nothing to try first.
  • Each has a real cost: Qualys VMDR licensing is per asset and each capability is its own subscription, so patch management, endpoint detection, web application scanning, container security and policy compliance are separate line items, and the platform demonstrated in a proof of concept is rarely the platform in the quote.; Rust compile times significantly longer than languages like Go or C
  • They diverge on capability: Qualys VMDR covers Cloud Agent, Rust covers Memory safety.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Qualys VMDR and Rust actually diverge.

Attributes where Qualys VMDR and Rust differ
AttributeQualys VMDRRust
Starting price$3/monthFree
Pricing modelsubscriptionopen-source
Free tierNoYes
PlatformsWeb, Cloud, ApiWindows, Linux, macOS
CategoryCybersecurityDeveloper Tools
Founded19992010

Identical on both: 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 Qualys VMDR

  • Cloud Agent
  • Scanner appliances
  • Authenticated scanning
  • TruRisk scoring
  • Asset inventory
  • Patch Management
  • Cloud connectors
  • Container sensor

Only in Rust

  • Memory safety
  • Zero-cost abstractions
  • Ownership system
  • Pattern matching
  • Type inference
  • Cargo package manager
  • Cross compilation
  • Fearless concurrency

What people use each for

The jobs each tool is most often brought in to do.

Qualys VMDR

  • A hybrid workforce where scheduled network scans miss most laptops and continuous agent-based assessment is the only way to get real coveragenot Rust
  • PCI DSS external scanning where an approved scanning vendor report is a contractual requirementnot Rust
  • An estate spanning datacentre, multiple public clouds and endpoints that needs one vulnerability view rather than three toolsnot Rust
  • Organisations replacing a manual patch-verification process with agent-reported evidence that a fix actually landednot Rust

Rust

  • Systems programming and operating system developmentnot Qualys VMDR
  • Performance-critical applicationsnot Qualys VMDR
  • Embedded systems and firmwarenot Qualys VMDR
  • Network services and concurrent applicationsnot Qualys VMDR

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Qualys VMDR

  • Licensing is per asset and each capability is its own subscription, so patch management, endpoint detection, web application scanning, container security and policy compliance are separate line items, and the platform demonstrated in a proof of concept is rarely the platform in the quote.
  • Ephemeral cloud instances consume asset entitlement until they age out of inventory, so an autoscaling group that creates and destroys hosts hourly can burn licence capacity on machines that existed for minutes, and controlling that means tuning purge policies rather than tuning the cloud.
  • Authenticated scanning produces materially better results than unauthenticated, but it requires storing and rotating privileged credentials for every target platform, which is a security project in its own right, and teams that skip it receive reports full of unconfirmed potential findings that nobody trusts.
  • The console is a set of modules with separate interfaces, search syntaxes and report engines, so an analyst moving between vulnerability management, policy compliance and web application scanning learns each one, and cross-module reporting usually ends in a spreadsheet or a script against the API.
  • The tool surfaces findings far faster than any organisation can remediate them, and it does not solve the ownership problem: without an agreed prioritisation policy and a named owner in IT operations, a first scan producing tens of thousands of findings becomes a dashboard that everyone learns to ignore.

Rust

  • Compile times significantly longer than languages like Go or C
  • Smaller ecosystem of libraries and frameworks compared to Python or JavaScript
  • Community still smaller than mainstream languages, reducing available third-party resources

Pricing, plan by plan

Qualys VMDR

$3/month
  • VMDR$3/month
    • Per asset
    • Vulnerability scanning
    • Detection
  • VMDR+$5/month
    • All VMDR features
    • Advanced analytics
    • Cloud integration
  • VMDR Complete$7/month
    • All VMDR+ features
    • Threat intel
    • Response automation

Rust

Free

No published plan breakdown. See the Rust review.

Which should you pick?

Choose Qualys VMDR if

  • You need cloud agent.
  • You work on Web, Cloud, Api.
  • You also want scanner appliances.
Qualys VMDR review

Choose Rust if

  • You need memory safety.
  • You want to start without paying.
  • You work on Windows, Linux, macOS.
  • You also want zero-cost abstractions.
Rust review

Questions people ask

Is Qualys VMDR or Rust better?
Neither clearly leads. Qualys VMDR starts at $3/month and Rust at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Qualys VMDR or Rust?
Rust has a free tier; the other does not. Paid plans start at $3/month for Qualys VMDR and Free for Rust.
Does Qualys VMDR or Rust run on more platforms?
Qualys VMDR runs on Web, Cloud, Api. Rust runs on Windows, Linux, macOS.
Can I use Rust for free?
Yes. Rust has a free tier, so you can try it without paying. Qualys VMDR starts at $3/month.
What is Qualys VMDR best used for?
Qualys VMDR is most often used for a hybrid workforce where scheduled network scans miss most laptops and continuous agent-based assessment is the only way to get real coverage, pci dss external scanning where an approved scanning vendor report is a contractual requirement, an estate spanning datacentre, multiple public clouds and endpoints that needs one vulnerability view rather than three tools, organisations replacing a manual patch-verification process with agent-reported evidence that a fix actually landed. Of those, a hybrid workforce where scheduled network scans miss most laptops and continuous agent-based assessment is the only way to get real coverage and pci dss external scanning where an approved scanning vendor report is a contractual requirement are not what Rust is typically brought in for.
What can Qualys VMDR do that Rust cannot?
Qualys VMDR covers Cloud Agent, Scanner appliances, Authenticated scanning, TruRisk scoring. Rust covers Memory safety, Zero-cost abstractions, Ownership system, Pattern matching.

Answered from the vendors’ own pages

Qualys VMDR: Agent or scanner: which do I need?

Usually both. The agent covers endpoints and servers you control and gives continuous data; scanners cover devices you cannot install an agent on, such as network gear, printers and appliances, and provide the external perimeter view.

Rust: Is Rust free?

Yes, Rust is free and open-source. The Rust Foundation provides institutional support for this community-driven project, and there are no costs associated with using the programming language.

Source
Qualys VMDR: Does it patch as well as detect?

Yes, through the Patch Management module, which is a separate subscription using the same agent. Core VMDR detects and prioritises but does not deploy fixes.

Rust: What license does Rust use?

Rust is open-source and operated under an open-source license. Full license details are available in the policies section of the Rust website.

Source
Qualys VMDR: How are assets counted for licensing?

By the number of assets in inventory, which includes cloud instances and containers depending on the modules in use. Short-lived cloud assets count until they are purged, so purge settings directly affect what you consume.

Qualys VMDR: Can I keep the data in a specific region?

Yes. Qualys operates several regional platform instances and you choose which one your subscription lives on. Moving between them later is not trivial, so decide before onboarding.

Qualys VMDR: Does it scan web applications?

Web Application Scanning is a separate module licensed per application, not part of core VMDR, and it is a dynamic scanner with the usual limits around authenticated flows in single-page applications.

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