Offline

          - Perl Core Hackathon (p5hack)
            - New event as of 2017
            - For Perl 5 core hackers (p5p)
            - 2018: Possibly open for core newbies? (Stay tuned)

          - Perl Toolchain Summit née the Perl QA Hackathon
            - Yearly gathering of Perl Toolchain hackers
            - Started in 2008 in Oslo
            - Sometimes open to newbies, but lately invitation-only