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Developer Tools · head to head

ESLint vs Wireshark

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Free plan
Yes
Full reviewWebsite
Wireshark logo

Wireshark

Cybersecurity

The world's foremost network protocol analyzer

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; Wireshark free and open source under the GNU GPL; downloadable without paying any license fee, no commercial tier
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which ESLint and Wireshark actually diverge.

Attributes where ESLint and Wireshark differ
AttributeESLintWireshark
Pricing modelUnknownfree
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentDesktop, Cli
CategoryDeveloper ToolsCybersecurity
Founded20191998

Identical on both: starting price (Free), 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 ESLint

Nothing recorded that Wireshark does not also cover.

Only in Wireshark

  • Deep packet inspection
  • Live capture
  • Offline analysis
  • 3000+ protocol support
  • Rich display filters
  • VoIP analysis
  • Decryption support
  • Scripting with Lua

What people use each for

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

ESLint

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

Wireshark

  • Network Securitynot ESLint
  • Packet Analysisnot ESLint
  • Open Sourcenot ESLint

Where each one falls short

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

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

Wireshark

  • Free and open source under the GNU GPL; downloadable without paying any license fee, no commercial tier

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

Wireshark

Free
  • Free & Open SourceFree
    • Full functionality
    • Deep inspection
    • Live capture

Which should you pick?

Choose ESLint if

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

Choose Wireshark if

  • You need deep packet inspection.
  • You want to start without paying.
  • You work on Desktop, Cli.
  • You also want live capture.
Wireshark review

Questions people ask

Is ESLint or Wireshark better?
Neither clearly leads. ESLint starts at Free and Wireshark at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or Wireshark?
ESLint starts at Free and Wireshark at Free.
Does ESLint or Wireshark run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. Wireshark runs on Desktop, Cli.
Can I use ESLint for free?
Both have a free tier, so you can try either at no cost before committing.
What is ESLint best used for?
ESLint is most often used for statically analysing javascript and jsx to find problems before runtime, automatically fixing issues with syntax-aware rewrites, enforcing a consistent code style across a team, running as a ci step to block non-conforming code. Of those, statically analysing javascript and jsx to find problems before runtime and automatically fixing issues with syntax-aware rewrites are not what Wireshark is typically brought in for.
What can ESLint do that Wireshark cannot?
Wireshark covers Deep packet inspection, Live capture, Offline analysis, 3000+ protocol support.

Answered from the vendors’ own pages

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
Wireshark: Is there a cost to download and use Wireshark?

No, Wireshark is completely free. It's distributed under the GNU General Public License version 2, making it "free software" with no demo limitations. The full version is available at no cost.

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
Wireshark: What support options are available for Wireshark users?

Wireshark offers multiple support channels including mailing lists, an active Discord community, the Ask Wireshark Q&A platform, comprehensive documentation, a user guide, and developer resources for those needing technical assistance.

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
Wireshark: Are there different pricing tiers or subscription levels?

Wireshark does not offer pricing tiers or subscriptions. There is one free version available to all users regardless of use case, personal, professional, or organizational.

Source
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