Everyone is a cat!
Find it at https://chrome.google.com/webstore/detail/jghckmfappcicbpehdfcdjagjppimonh/ or download it here and load it as an 'unpacked extension'.
Github All Cats is a Google chrome extension that adds a button to toggle showing github usernames or randomly chosen adjectives and cat names. This lets you anonymize other github users and makes you judge their code and not their name or looks.
Based on github-real-names, but does quite the opposite.
List of cat names from wikipedia
List of license information and acknoledgements in CAT-LICENSES
MIT