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ESLint vs Superhuman

ESLint logo

ESLint

Developer Tools

Find and fix problems in JavaScript code

From
Free
Free plan
Yes
Full reviewWebsite
Superhuman logo

Superhuman

Technology

The fastest email experience ever made

From
$30/month
Free plan
No
Full reviewWebsite

The short version

  • Only ESLint has a free tier, so it costs nothing to try first.
  • Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; Superhuman high pricing compared to free alternatives like Gmail
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which ESLint and Superhuman actually diverge.

Attributes where ESLint and Superhuman differ
AttributeESLintSuperhuman
Starting priceFree$30/month
Free tierYesNo
PlatformsBrowser-based JavaScript, Node.js, Any JavaScript environmentWeb, iOS
CategoryDeveloper ToolsTechnology
Founded20192015

Identical on both: pricing model (Unknown), 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 Superhuman does not also cover.

Only in Superhuman

  • Blazing fast performance
  • Keyboard-first design
  • AI-powered triage
  • Split inbox
  • Read statuses
  • Remind me later
  • Social insights
  • Calendar integration

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 Superhuman
  • Automatically fixing issues with syntax-aware rewritesnot Superhuman
  • Enforcing a consistent code style across a teamnot Superhuman
  • Running as a CI step to block non-conforming codenot Superhuman
  • Writing custom rules for project-specific conventionsnot Superhuman

Superhuman

  • Email managementnot ESLint
  • Inbox zeronot ESLint
  • Team collaborationnot ESLint
  • Sales outreachnot ESLint
  • Executive communicationnot 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

Superhuman

  • High pricing compared to free alternatives like Gmail
  • Lacks unified inbox for managing multiple email accounts in a single view
  • Limited calendar functionality compared to dedicated scheduling tools
  • No native task management features

Pricing, plan by plan

ESLint

Free

No published plan breakdown. See the ESLint review.

Superhuman

$30/month
  • Starter$30/month
    • Email productivity
    • Superhuman AI
    • Team collaboration
  • Business$40/month
    • Auto Drafts
    • Ask AI
    • CRM integrations

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 Superhuman if

  • You need blazing fast performance.
  • You work on Web, iOS.
  • You also want keyboard-first design.
Superhuman review

Questions people ask

Is ESLint or Superhuman better?
Neither clearly leads. ESLint starts at Free and Superhuman at $30/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ESLint or Superhuman?
ESLint has a free tier; the other does not. Paid plans start at Free for ESLint and $30/month for Superhuman.
Does ESLint or Superhuman run on more platforms?
ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. Superhuman runs on Web, iOS.
Can I use ESLint for free?
Yes. ESLint has a free tier, so you can try it without paying. Superhuman starts at $30/month.
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 Superhuman is typically brought in for.
What can ESLint do that Superhuman cannot?
Superhuman covers Blazing fast performance, Keyboard-first design, AI-powered triage, Split inbox.

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
Superhuman: How much does Superhuman cost?

Superhuman offers three plans: Starter at $30/user/month, Business at $40/user/month, and Enterprise with custom pricing. Annual billing provides approximately 16.7% savings, bringing the Starter plan to $25/month.

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
Superhuman: What email platforms does Superhuman work with?

Superhuman is compatible with Gmail and Outlook, and integrates with Google Calendar and Akiflow for calendar and task planning workflows.

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
Superhuman: Does the Business plan include CRM integrations?

Yes, the Business plan at $40/month unlocks CRM integrations with HubSpot and Salesforce, along with advanced AI features like Auto Drafts and Ask AI.

Source
Superhuman: What happened to Superhuman after the Grammarly acquisition?

Superhuman was acquired by Grammarly on July 1, 2025. The company now operates under the Superhuman name while integrating with Grammarly's AI platform.

Source
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