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Perl

How to select a Perl project to contribute to?

• A perl-based project that you use.
• MetaCPAN itself
• A module that you use.
• A dependency of a project or a module that you use.
• Search on GitHub: A semi-popular, recently updated Perl project stars:100..1000 pushed:>2025-10-01 language:Perl
• CPAN Digger

What and how to contribute to a Perl project?

• Testing
  • Testing articles
  • Testing book
  • Test::More
  • Generate test coverage report Devel::Cover
• Linting
• code formatting
  • Perl::Tidy
• Fuzz testing
• Mutation testing
• Code complexity analyzis
• Refactoring
• Setting up CI
  • GitHub Actions
  • GitLab pipelines
    • examples
    • video
• Updating the GitHub actions if necessary
• Add dependabot for GitHub Actions.
• Add dependabot for the code-base.
• Code reading

See also this issue about the goals.

Projects

• JSON::Schema::Validate
  • 2025.12.01
  • Showcase: Localised JSON Schema validation in Perl
  • PR: add .gitignore file - Waiting 🕰️
  • PR: Setup CI - GitLab pipeline - Waiting 🕰️
  • Open issue
  • Also check out the GitLab pipeline of the Wanted module
• SVG
  • 2025.11.11
  • As I am a maintainer of this project I could commit and push directly:
  • add a test case to check loading attributes and trying to load bad attribute ✅
  • add a test case for creating new instance from an existing one ✅
• Net-Async-Redis-XS
  • 2022.12.02
  • Article: Add GitHub Action CI to the Net-Async-Redis-XS Perl module
  • PR: Add GitHub Actions for CI - Merged ✅
• Win32-Wlan
  • 2022.12.05
  • Article: CI for Win32-Wlan Perl module
  • PR: Add GitHub Actions to run the tests on every push - Merged ✅
• RDF::KV
  • 2022.12.07
  • Article: Be pragmatic setting up CI for the RDF::KV
  • PR: Add GitHub Actions - Waiting 🕰️
• Perl::Efl
  • 2022.12.08
  • Article: Adding CI to Perl::Efl - sometimes you need to do some extra work
  • PR: Add GitHub Actions - Merged ✅
• Mojo-UserAgent-Cached
  • 2022.12.09
  • Article: CI for Mojo-UserAgent-Cached and Plack-Middleware-Greylist
  • PR: Add GitHub Actions - Merged ✅
• Plack-Middleware-Greylist
  • 2022.12.09
  • Article: CI for Mojo-UserAgent-Cached and Plack-Middleware-Greylist
  • PR: Add GitHub Actions - Merged ✅
• Log::Any
  • 2022.12.14
  • Article: CI for the Log::Any Perl module
  • PR: Add GitHub Actions - Merged ✅
• Marpa::R2
  • 2022.12.16
  • Article: Moving from Travis-CI to GitHub Actions for Marpa::R2
  • Issue: CI: Does Travis-CI still work for you?
  • Issue: IO::Select and other modules in the IO package report version 1.49 whle IO itself is 1.50
  • Issue: cpan/engine/read_only/tests/* files missing
  • PR: Add GitHub Actions - Rejected ❌ (it will be setup later)
• Plack-Middleware-LogAny
  • 2022.12.19
  • Article: CI for Plack-Middleware-LogAny
  • PR: add github actions - Waiting 🕰️
• MIME-Types
  • 2022.12.24
  • Article: CI for perl5-MIME-Type
  • PR: Add GitHub Actions - Merged ✅
• Data::Alias
  • 2022.12.25
  • Article: CI for Data::Alias in Perl - including threaded perl
  • PR: Add GitHub Actions - Merged ✅