What is ESLint?
ESLint is an open source pluggable linting utility for JavaScript and JSX that statically analyzes code to find problems. Many issues can be automatically fixed, and it integrates with text editors and CI pipelines.
ESLint pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free open source
Open Source
FreeFree open source linter
- Find issues in JavaScript code
- Automatically fix problems
- Custom parsers
- Custom rules
- Text editor integration
- CI pipeline integration
What ESLint does
The capabilities that matter for code quality tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Function
- Linter
- Language scope
- Single-language
- Implementation language
- JavaScript
- Autofix
- ✓
- Config model
- Config file
- Custom rules
- ✓
- Deployment
- CLI-local
- Editor integration
- ✓
- CI / VCS gating
- ✓
- Code metrics
- -
- Incremental / monorepo aware
- -
- Open-source
- OSS
- Pricing model
- Free
Platform & deployment
Independently observed- CLI
- Self-hosted
Integrations (1)
Independently observed- Codemod
ESLint alternatives
Other code quality tools we track, ranked by the same independent score.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for ESLint, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package Downloads | 100 | 0.20 | 20.0 | ✓ |
| Github Activity | 62 | 0.14 | 8.6 | ✓ |
| Capabilities | 67 | 0.12 | 8.3 | ✓ |
| Release Cadence | 93 | 0.08 | 7.1 | ✓ |
| Price Level | 100 | 0.05 | 4.6 | ✓ |
| Github Stars | 84 | 0.04 | 3.2 | ✓ |
| Pricing Transparency | 25 | 0.06 | 1.6 | ✓ |
| Integrations | 9 | 0.06 | 0.5 | ✓ |
| Reliability | 0 | 0.06 | 0.0 | - |
| Security Posture | 0 | 0.10 | 0.0 | - |
| Stackoverflow Activity | 0 | 0.09 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 92 | mediumsource · 2026-08-01 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"autofix":true,"function":"linter","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"config_file","custom_rules":true,"impl_language":"JavaScript","pricing_model":"free","language_scope":"single_language","editor_integration":true} | mediumsource · 2026-08-05 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 1 | mediumsource · 2026-08-05 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-08-01 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-08-01 · 99% |
Pricing
Release
| Attribute | Value | Evidence |
|---|---|---|
| Cadence days | 13 | mediumsource · 2026-08-01 · 70% |