SonarQube Cloud

YES

Replaceable in one session with an AI coding agent.

Static analysis for code quality and security: issues, duplication, coverage and a quality gate that blocks a merge when new code falls below a standard.

Promptfree, for everyone, and the only version there is

Run the free analysers, and gate on new code only.

STACK
- Your language's own linter, plus Semgrep, in CI

THE IDEA WORTH COPYING
- Judge the diff, not the repository. A gate on total quality punishes anyone who touches an old file and gets disabled
- Compute issues introduced by this pull request only, and fail on those

HOW
- Run the analyser on the merge base and on the head, then diff the findings by file and rule
- Report only findings whose line falls inside the diff

DUPLICATION
- jscpd finds copy-paste; gate on new duplication rather than total

COVERAGE
- Same rule: coverage of changed lines, not overall

Self-hosting the community edition is also free, if you want the full product

Include the diff-scoped reporting, the gate and the CI job.

What you lose

Rule sets for many languages, each maintained by people who know that language well
The new-code quality gate, which judges the change rather than the whole repository
A history of quality over time across branches

If you would rather not build

SonarQube Community Edition, self-hosted and free
ESLint or the equivalent, which you already run

The escape hatch

open source · no votes, no paid placement

Semgrep

Static analysis across many languages with a free rule set.

semgrep/semgrepfree · open source

jscpd

Copy-paste detection across a repository, runnable in CI.

kucherenko/jscpdfree · open source

Why this verdict

our own opinion · changed only by a person

78/100

Verdict yes at 78. The community edition is free to self-host, and the diff-scoped gate is the idea worth copying whichever route you take.

History

tracked since 10 Aug 2026 · nothing is ever overwritten

Interest · last 30 days

Nothing recorded yet. This chart fills in once the page has visitors, votes or prompt copies — it will not draw a flat line to look busy.

Questions about SonarQube Cloud

answered from the record above

Is SonarQube Cloud free?

No — the plan we track is $32 a month. Team from around $32/month billed monthly for a small line-of-code allowance; free for public projects.

Can you replace SonarQube Cloud by building your own?

YES. Replaceable in one session with an AI coding agent. Replacement score 78 out of 100, build time one session. Read what you lose before you decide.

How much does SonarQube Cloud cost?

$32 a month on Team — $384 a year. Recorded 10 Aug 2026.

What do you lose by replacing SonarQube Cloud?

Rule sets for many languages, each maintained by people who know that language well; The new-code quality gate, which judges the change rather than the whole repository; A history of quality over time across branches. If any of those carry weight for you, keep paying.

Is there an open-source alternative to SonarQube Cloud?

Yes: Semgrep, jscpd. The prompt on this page is for when you want it your way instead.

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