I'd like to invite people to try the early release of Empire API, which is one API for every enterprise SaaS:
Empire is an API for accessing enterprise SaaS services such as Salesforce, Zendesk, Google Apps, etc. It provides a uniform, database-like interface to every service that it supports. Empire makes it easy to integrate data from multiple enterprise services into your own enterprise app.
You can click Login to create an account, and we'll send you an API key. Or you can just sign up for the mailing list.