Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Linters

ShellCheck vs Biome

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score ShellCheck #3 in Linters 9.0/10 Free plan Free plan✓ 2 of 4 features Visit ShellCheck
Biome #8 in Linters 8.4/10 Free plan Free plan✓ 4 of 4 features Visit Biome

ShellCheck leads on 0 checks, Biome on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreShellCheck · 9.0/10
  • Free planboth
  • Most featuresBiome · 4 of 4

ShellCheck scores higher on our rubric for linters: 9.0 against 8.4 out of 10; our editors rank them #3 and #8.

Biome leads on languages supported: 17 versus 4. On ide support, Biome gives you Ide where ShellCheck offers Editor.

ShellCheck is the better fit for shell-script quality and portability checks. Biome is the better fit for teams linting and formatting web code.

  • ShellCheck fits best

    Shell-script quality and portability checks

  • Biome fits best

    Teams linting and formatting web code

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature ShellCheck 9.0/10 Visit ↗ Biome 8.4/10 Visit ↗
At a glance
Editor score 9.0 8.4
Ranking #3 in Linters #8 in Linters
Best for Shell-script quality and portability checks Teams linting and formatting web code
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Desktop
Platforms Web, Windows, macOS, Linux Windows, macOS, Linux
Support Community, Docs Community, Docs
Integrations 9 integrations 5 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features ShellCheck 2/4 · Biome 4/4
Autofix ✓ ✓
Custom rules Not checked yet ✓ (best)
Security rules Not checked yet ✓ (best)
CI support ✓ ✓
Specs
Languages supported 4 17 (best)
IDE support Editor Ide
Our review
Pros
  • Checks sh, bash, dash, ksh and BusyBox shell dialects
  • Fits editors, CI pipelines and build or test workflows
  • Provides machine-readable output and unified-diff fix suggestions
  • Combines linting, formatting, autofixes, import sorting, and CI checks
  • Supports editor workflows through VS Code, IntelliJ, and Zed integrations
  • Offers custom diagnostics, configurable rules, Docker images, and standalone binaries
Cons
  • Does not support custom rules
  • Focused specifically on shell scripts rather than multiple languages
  • Configuration relies on inline directives and shellcheckrc
  • Some listed languages are experimental or in progress
  • Not all listed language entries currently support linting
  • Its focus is web projects rather than general-purpose codebases
Our verdict

ShellCheck is an open-source static analysis and linting tool for shell scripts. It is suited to developers and teams maintaining sh, bash, dash, ksh or BusyBox shell code who want feedback on syntax, semantic, robustness, portability and…

Read the review →

Biome is an open-source toolchain for web projects, combining a formatter, linter, command-line interface, and Language Server Protocol integration. It is aimed at developers and teams maintaining modern web applications, with support for…

Read the review →
  1. ShellCheckLinters 9.0Free plan
  2. BiomeLinters 8.4Free plan

Strengths and trade-offs

  • ShellCheck — where it wins

    • Checks sh, bash, dash, ksh and BusyBox shell dialects
    • Fits editors, CI pipelines and build or test workflows
    • Provides machine-readable output and unified-diff fix suggestions

    Where it doesn't

    • Does not support custom rules
    • Focused specifically on shell scripts rather than multiple languages
    • Configuration relies on inline directives and shellcheckrc

  • Biome — where it wins

    • Combines linting, formatting, autofixes, import sorting, and CI checks
    • Supports editor workflows through VS Code, IntelliJ, and Zed integrations
    • Offers custom diagnostics, configurable rules, Docker images, and standalone binaries

    Where it doesn't

    • Some listed languages are experimental or in progress
    • Not all listed language entries currently support linting
    • Its focus is web projects rather than general-purpose codebases

More comparisons

All linters comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update