Explore the Integration Directory here 

Premium customers have access to a wide range of integrations through our Integration Directory. You can now connect Workplace to some of the most popular SaaS tools like Jira Cloud by Atlassian, Microsoft Sharepoint, ServiceNow, Adobe Sign and SurveyMonkey. For now, Standard customers will have access to a more limited set of integrations, including content integrations with tools like Box, OneDrive and Dropbox and RSS feed integrations, which can be added to any group. 

We have just scratched the surface of what is possible. So we are also asking third-party developers to register their interest in building integrations for the tens of thousands of organizations that use Workplace.