ESLintvs
Prettier
Prettier: Code formatter that handles formatting concerns while ESLint focuses on code quality; many projects use both together.
ESLint
Find and fix problems in JavaScript code
As of 29 August 2026, ESLint is free to use. ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code, with the goal of making code more consistent and avoiding bugs. Softwr lists it under Developer Tools. ESLint is made by OpenJS Foundation, launched in 2019, available on API.
Overview
What ESLint does
ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code, with the goal of making code more consistent and avoiding bugs. It has built-in rules and can be configured with custom rules.
What people use it 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
- Writing custom rules for project-specific conventions
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about 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
Cross-shopped
What people choose instead of ESLint
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
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.
SourceHow much does ESLint cost?
ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.
SourceCan 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.
SourceBehind it
Who makes ESLint
- Company
- OpenJS Foundation
- Based in
- San Francisco, California, USA
- Founders
- Nicholas C. Zakas
Timeline
ESLint over time
- Founded2013-06-01
ESLint created by Nicholas C. Zakas
Source
Keep looking
Where to go from ESLint
- ESLint alternativesEvery product people weigh against it
- ESLint pricingPlans, floors and what the tiers exclude
- ESLint badgesWhich rules it meets, and the figure behind each
- All Developer Tools softwareThe full category
- Best Developer Tools softwareThe shortlist, and how it was cut
Best Developer Tools software for
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Softwr does not host reviews and shows no star rating for ESLint, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
More on ESLint
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ESLint badge
Its rating, and an embed for your own site
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