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Best Code Coverage Tools in 2026

Code coverage tools show how much of a codebase your tests exercise. This list is for people who need coverage reports for development, CI, or a self-hosted setup.

  1. 1

    Codecov

    Free plan Open source APIExtensionLinux+3

    Codecov combines coverage reporting with pull-request controls, test analytics, and bundle analysis. A free tier and 14-day trial are listed, with paid plans from $5/user/mo.

    9.1 Free plan · paid from $5/user/mo · 14-day trial Visit site
  2. 2

    BullseyeCoverage

    Free plan LinuxMacSelf-hosted+1

    Choose BullseyeCoverage for C or C++ projects that need function and condition/decision coverage across desktop, server, or embedded environments.

    7.7 Visit site
  3. 3

    Coveralls

    Free plan APILinuxSelf-hosted+1

    Coveralls connects coverage history and detail with pull-request reporting and merge criteria.

    7.4 Free plan · paid from $10/mo · 30-day trial Visit site
  4. 4

    LCOV

    Free plan LinuxSelf-hosted

    LCOV offers detailed coverage reporting and filtering for supported codebases, with HTML and .info output.

    6.9 Open source Visit site
  5. 5

    SimpleCov

    Free plan LinuxMacWeb+1

    SimpleCov offers configurable Ruby coverage reports, test mapping, and threshold gates. Its startup order requirement matters, and JRuby users should note the line-coverage-only limit.

    6.9 Free plan Visit site
  6. 6

    JaCoCo

    Free plan API

    Choose JaCoCo if you need a free library to measure Java code coverage and create reports through Ant or Maven. It supports a range of coverage metrics and integrations.

    6.8 Free plan Visit site
  7. 7

    dotCover

    Free trial LinuxMacWindows

    dotCover combines .NET test running with statement, unit-test, and application/manual coverage analysis.

    6.1 30-day trial Visit site
  8. 8

    Clover

    by Atlassian
    Free plan
    5.9 Visit site
  9. 9

    OpenCover

    by OpenCover contributors
    Paid
    3.8 Visit site
  10. 10

    OpenCppCoverage

    by OpenCppCoverage contributors
    Paid
    3.7 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Match the needed environment—Linux, macOS, Windows, web, API, or self-hosted—to each tool's pricing approach. Check free-plan limits, trial length, and the open-source licence before choosing.

Questions

Are free code coverage tools available?

Yes. Several entries provide free plans or free pricing; review each tool's terms before choosing.

Which tools have free trials?

BullseyeCoverage, Codecov, Coveralls, and dotCover list free trials. Codecov's trial is 14 days, while Coveralls and dotCover each list 30 days.

Are any code coverage tools open source?

Yes. Some entries provide open-source code. Review the licence before changing or redistributing code.

What platforms do these tools support?

Across the category, supported environments include Linux, macOS, Windows, web, API, and self-hosted setups. Check the platform fit for your workflow.

What does Codecov cost after its free plan?

Codecov's paid plans start at $5 per user per month, and it lists a 14-day trial.

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