The Grouply ID authentication system lets you choose a Grouply ID and password once and use them to log into grouply.com and any group website that uses the Grouply ID. When you login with your Grouply ID, all of your group memberships are automatically detected, and you can then visit any group websites that use the Grouply ID without having to login again.

When you create a Grouply ID, you can also create a Grouply profile including your photo and other details about yourself. You can control which groups can access your Grouply profile and what details they can see on it.

To get a Grouply ID, simply register with Grouply.