This post is a contribution from Chanchal Jain, an engineer with the SharePoint Developer Support team.
Content Management Interoperability Services (CMIS) connector for Microsoft SharePoint Server 2010 enables SharePoint users to interact with content that is stored in any repository that has implemented the CMIS standard. The connector also makes SharePoint Server 2010 content available to any application that has implemented the CMIS standard. The CMIS connector is available as part of the SharePoint 2010 Administration Toolkit.
How to use CMIS APIs to extract information from SharePoint repositories?
Once the CMIS connector is installed on the SharePoint Server, it exposes a set of WCF Services to perform read/write and various operations on the repositories (maps to SharePoint list and libraries).