Biome vs Codacy

Free and open source

From $21 per user/month (indicative, Pro)

Free and open source. You pay in engineering time and CI minutes.

Per-developer pricing rather than lines of code, which suits small teams with large codebases.

Everything, self-hosted

Free for open-source projects and small teams.

Widely used

Biome / OSS community · since 2023

Established

Codacy · since 2014

• Dramatically faster than ESLint plus Prettier, which matters on pre-commit hooks.
• One binary and one config replaces two toolchains.
• Very good ESLint rule migration tooling.

• 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.

• Rule coverage does not yet match ESLint's plugin ecosystem.
• No support for framework-specific plugin ecosystems at ESLint's depth.
• Young project, so expect churn.

• Wrapping open-source linters means analysis depth depends on those tools.
• Configuration across many languages becomes fiddly.
• Less established than SonarQube in enterprise procurement.

New JavaScript projects and teams frustrated by lint performance.

Small and mid-sized teams wanting quality and security checks in PRs without running a server.