Ready, set, code!
People and Profiles
Customize content, suggest connections for your users, and improve engagement through users’ connections.
Hangout Apps
Build collaborative Hangout apps that bring people together in new and interesting ways.
Sharing
Add a Google+ share button to your pages and apps to let your users share what they want, when they want, with whom they want.
Domains API
Google Apps customers and ISVs can build custom Google+ functionality and services for people who use Google Apps at college, at work, or at home.