Codacy vs ESLint
Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
From $18 per developer/month (Team, billed annually; $21 monthly)
Free tierFree and open source
Open sourceWhat drives the bill
The metric that actually scales your invoice.
Per-developer pricing rather than lines of code, which suits small teams with large codebases. Team covers up to 30 developers and 100 private repos; beyond that Business is quote-based.
Free and open source. You pay in engineering time and CI minutes.
Free tier
Developer plan is free forever, and Team is free for open-source projects.
Everything, self-hosted
Open source
MIT
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
Codacy · since 2014
Category standard
OpenJS Foundation · since 2013
Strengths
- Per-developer pricing is cheaper than SonarQube for small teams on big repositories.
- Bundles quality and security scanning in one PR check.
- Very quick to set up — connect a repository and it works.
- The plugin ecosystem lets you enforce almost any convention as a rule.
- Autofix handles a large share of findings without human effort.
- Universal — every JavaScript tool integrates with it.
Limitations
- Wrapping open-source linters means analysis depth depends on those tools.
- Configuration across many languages becomes fiddly.
- Less established than SonarQube in enterprise procurement.
- Configuration is a real project of its own, and the flat-config migration caused significant churn.
- Slow on large codebases without caching.
- Rule sprawl produces bikeshedding unless someone owns the config.
Best for
Small and mid-sized teams wanting quality and security checks in PRs without running a server.
Every JavaScript and TypeScript project.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.