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Cybersecurity · head to head

Avast One vs ESLint

Avast One logo

Avast One

Cybersecurity

All-in-one protection for your digital life

From
Free
Free plan
Yes
Full reviewWebsite
ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Avast One ransomware and Wi-Fi vulnerability protection only on paid plans; ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Avast One and ESLint actually diverge.

Attributes where Avast One and ESLint differ
AttributeAvast OneESLint
PlatformsWindows, macOS, iOS, AndroidBrowser-based JavaScript, Node.js, Any JavaScript environment
CategoryCybersecurityDeveloper Tools
Founded19882019

Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), 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 Avast One

  • Antivirus
  • Firewall
  • VPN
  • Data breach monitoring
  • Email Guardian
  • Webcam Shield
  • Ransomware Shield
  • Performance optimization

Only in ESLint

Nothing recorded that Avast One does not also cover.

What people use each for

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

Avast One

  • Antivirusnot ESLint
  • Internet Securitynot ESLint
  • Privacy Toolsnot ESLint

ESLint

  • Statically analysing JavaScript and JSX to find problems before runtimenot Avast One
  • Automatically fixing issues with syntax-aware rewritesnot Avast One
  • Enforcing a consistent code style across a teamnot Avast One
  • Running as a CI step to block non-conforming codenot Avast One
  • Writing custom rules for project-specific conventionsnot Avast One

Where each one falls short

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

Avast One

  • Ransomware and Wi-Fi vulnerability protection only on paid plans
  • Free plan VPN is limited, no data breakthrough monitoring
  • Rebuilt app in May 2026 may have stability issues

ESLint

  • Slow performance on large codebases compared to newer tools like Oxlint and Biome
  • Complexity in configuration from scratch, particularly for TypeScript support
  • Limited built-in TypeScript support, requiring separate parsers and coordination with new TypeScript features

Pricing, plan by plan

Avast One

Free
  • FreeFree
    • Antivirus
    • Limited VPN
    • Privacy tools
  • Silver$2.99/month
    • Enhanced antivirus
    • VPN
    • Device cleanup
  • Premium$4.19/month
    • Full antivirus
    • VPN with 55 servers
    • Password manager
  • Premium Plus$11.67/month
    • All Premium features
    • 30 devices covered

ESLint

Free

No published plan breakdown. See the ESLint review.

Which should you pick?

Choose Avast One if

  • You need antivirus.
  • You want to start without paying.
  • You work on Windows, macOS, iOS, Android.
  • You also want firewall.
Avast One review

Choose ESLint if

  • You want to start without paying.
  • You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
ESLint review

Questions people ask

Is Avast One or ESLint better?
Neither clearly leads. Avast One starts at Free and ESLint at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Avast One or ESLint?
Avast One starts at Free and ESLint at Free.
Does Avast One or ESLint run on more platforms?
Avast One runs on Windows, macOS, iOS, Android. ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment.
Can I use Avast One for free?
Both have a free tier, so you can try either at no cost before committing.
What is Avast One best used for?
Avast One is most often used for antivirus, internet security, privacy tools. Of those, antivirus and internet security are not what ESLint is typically brought in for.
What can Avast One do that ESLint cannot?
Avast One covers Antivirus, Firewall, VPN, Data breach monitoring.

Answered from the vendors’ own pages

Avast One: Is Avast One free?

Yes. Avast One offers a free tier with antivirus, VPN (limited), and privacy tools. Paid plans start at $2.99/month for Silver and $4.19/month for Premium covering up to 5 devices.

Source
ESLint: Does ESLint automatically fix code issues?

Many problems ESLint finds can be automatically fixed via the --fix flag. ESLint fixes are syntax-aware so you won't experience errors introduced by traditional find-and-replace algorithms.

Source
Avast One: What does Avast One include?

Avast One provides antivirus, VPN, password manager, device cleanup, Wi-Fi security, data breach monitoring, and protection against AI-generated scams and deepfakes.

Source
ESLint: How much does ESLint cost?

ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.

Source
Avast One: Does Avast One have ransomware protection?

Ransomware protection is available only on paid plans, not the free tier. Free users get antivirus and basic protection only.

Source
ESLint: Can I write custom ESLint rules?

Yes. You can develop custom rules that work alongside built-in functionality through ESLint's plugin system, allowing complete customization for your project needs.

Source
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