Ruby Coverage

Open-source Ruby projects categorized as Coverage
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Top 7 Ruby Coverage Projects

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Coverage

  1. SimpleCov

    Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

  2. SaaSHub

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  3. mutant

    Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?

    Project mention: Automated code reviews via mutation testing | news.ycombinator.com | 2025-10-06

  4. undercover

    undercover warns about methods, classes and blocks that were changed without tests, to help you easily find untested code and reduce the number of bugs. It does so by analysing data from git diffs, code structure and SimpleCov coverage reports

  5. spoom

    Useful tools for Sorbet enthusiasts

  6. RSpec Tracer

    RSpec Tracer is a specs dependency analyzer, flaky-test detector, test accelerator, and coverage reporter for RSpec. It records the inputs every example consumes — Ruby files (via `Coverage`), file I/O (via prepended `File` / `IO` / `YAML` / `JSON` hooks), Rails template + AR notifications, and user-declared globs — then re-runs only the examples whose inputs changed since the last run. It never skips: - **Failed**, **flaky**, or **pending** examples. - Examples whose dependent inputs changed (

    Project mention: Skip the RSpec examples you don't need: rspec-tracer 2.0 in pre-release | dev.to | 2026-05-07

    This is the problem rspec-tracer solves. Cold run of a suite: everything runs. Second run with no edits: nothing runs. Edit one file: only the examples that depend on that file re-run.

  7. bashcov

    Code coverage tool for Bash

  8. kettle-soup-cover

    🥘 A Covered Kettle of SOUP, A Code Coverage Meta Gem

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Ruby Coverage related posts

  • Skip the RSpec examples you don't need: rspec-tracer 2.0 in pre-release

    1 project | dev.to | 7 May 2026

  • Automated code reviews via mutation testing

    1 project | news.ycombinator.com | 6 Oct 2025

  • In Pursuit of Perfect Code Coverage Reporting

    1 project | /r/ruby | 31 Mar 2022

  • Code coverage vs mutation testing.

    1 project | /r/ruby | 16 Feb 2022

  • Run tests 2-3x faster on average

    1 project | dev.to | 16 Sep 2021

  • Mutant – Automated code reviews via mutation testing – semantic code coverage

    1 project | news.ycombinator.com | 8 Sep 2021

  • Automated code reviews via mutation testing - semantic code coverage.

    1 project | /r/ruby | 8 Sep 2021
  • A note from our sponsor - SaaSHub
    www.saashub.com | 14 Jun 2026
    SaaSHub helps you find the best software and product alternatives Learn more →

Index

What are some of the best open-source Coverage projects in Ruby? This list will help you:

# Project Stars
1 SimpleCov 4,901
2 mutant 2,163
3 undercover 838
4 spoom 263
5 RSpec Tracer 174
6 bashcov 171
7 kettle-soup-cover 10

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