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Head-to-head · Test Coverage Tools

Coveralls vs OpenClover

  • Updated Sep 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Coveralls #2 in Test Coverage Tools 9.2/10 Free plan · paid from $10/mo · 30-day trial Free plan✓ 4 of 4 features Visit Coveralls
OpenClover #4 in Test Coverage Tools 7.4/10 Free plan Free plan✓ 2 of 4 features Visit OpenClover

Coveralls leads on 2 checks, OpenClover on 0, and 3 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCoveralls · 9.2/10
  • Free planboth
  • Most featuresCoveralls · 4 of 4

Coveralls scores higher on our rubric for test coverage tools: 9.2 against 7.4 out of 10; our editors rank them #2 and #4.

Coveralls offers pull-request annotations; OpenClover doesn't publish it. Coveralls offers self-hosted option; OpenClover doesn't publish it.

Coveralls is the better fit for mature multi-language coverage reporting. OpenClover is the better fit for java teams wanting history and test optimization.

  • Coveralls fits best

    Mature multi-language coverage reporting

  • OpenClover fits best

    Java teams wanting history and test optimization

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes our verdict. How we rank.

Side by side

Feature Coveralls 9.2/10 Visit ↗ OpenClover 7.4/10 Visit ↗
At a glance
Editor score 9.2 7.4
Ranking #2 in Test Coverage Tools #4 in Test Coverage Tools
Best for Mature multi-language coverage reporting Java teams wanting history and test optimization
Pricing model Free plan + paid Free
Starting price $10/mo Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Desktop
Platforms Web Windows, macOS, Linux
Support Email, Live chat, Community, Docs Community, Docs
Integrations 30+ integrations 14 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Coveralls 4/4 · OpenClover 2/4
Pull-request annotations ✓ (best) Not published
Self-hosted option ✓ (best) Not published
Historical trends ✓ ✓
Coverage gates ✓ ✓
Specs
Coverage types line, branch method, statement, branch, global, per-test
Supported languages .NET, C/C++, D, Elixir, Erlang, FORTRAN, Go, Haskell, Java, JavaScript, Julia, Kotlin, Lisp, Lua, OCaml, Objective-C, PHP, Python, R, Ruby, Scala, Smalltalk, Swift Java, Groovy, AspectJ
Report formats LCOV, SimpleCov, Cobertura, JaCoCo, Gcov, LuaCov, Golang, Coveralls JSON, Pytest-Cov, Clover XML HTML, XML, PDF, JSON, TEXT
Our review
Pros
  • Repository, file, and line-level coverage statistics with history
  • Pull-request comments, thresholds, and commit status updates
  • Broad CI, language, notification, API, and self-hosted support
  • Method, statement, branch, global and per-test coverage metrics
  • Historical reports, data merging and filtering across coverage results
  • Ant, Maven, Gradle, CI, IDE and test-framework integrations
Cons
  • Private repositories require a paid plan
  • Language integrations are community-created unless otherwise noted
  • Higher tiers are needed for larger private-repository portfolios
  • Language support is limited to Java, Groovy and AspectJ
  • The feature set is focused on source-code coverage rather than broad testing
  • Its project structure is an informal, unincorporated group
Our verdict

Coveralls is a web-based code coverage service for software teams and open-source projects. It receives coverage reports from continuous-integration workflows, stores build history, and presents repository, file, and line-level statistics.…

Read the review →

OpenClover is an open-source code coverage tool for Java, Groovy and AspectJ projects. It instruments source code, measures global and per-test coverage, and reports method, statement and branch metrics. Java teams that need coverage…

Read the review →
  1. CoverallsTest Coverage Tools 9.2Free plan · paid from $10/mo · 30-day trial
  2. OpenCloverTest Coverage Tools 7.4Free plan

Strengths and trade-offs

  • Coveralls — where it wins

    • Repository, file, and line-level coverage statistics with history
    • Pull-request comments, thresholds, and commit status updates
    • Broad CI, language, notification, API, and self-hosted support

    Where it doesn't

    • Private repositories require a paid plan
    • Language integrations are community-created unless otherwise noted
    • Higher tiers are needed for larger private-repository portfolios

  • OpenClover — where it wins

    • Method, statement, branch, global and per-test coverage metrics
    • Historical reports, data merging and filtering across coverage results
    • Ant, Maven, Gradle, CI, IDE and test-framework integrations

    Where it doesn't

    • Language support is limited to Java, Groovy and AspectJ
    • The feature set is focused on source-code coverage rather than broad testing
    • Its project structure is an informal, unincorporated group
  • Coveralls9.2/10 · Free plan · paid from $10/mo · 30-day trial

    A mature coverage service for multi-language teams needing CI and pull-request visibility.

    Visit CoverallsFull verdict →
  • OpenClover7.4/10 · Free plan

    A free, open-source coverage tool with strong Java testing and reporting depth.

    Visit OpenCloverFull verdict →

More comparisons

All test coverage tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update