OData connectors (PowerPivot) for SalesForce.com, QuickBooks, Twitter, etc.
RSSBus released set of OData connectors that can be used by PowerPivot:
- QuickBooks through OData
- Salesforce through OData
- SharePoint through OData
- MSCRM through OData
- Twitter through OData
- SQL through OData
- SQLite through OData
Please read more: "Use Microsoft PowerPivot to Access Salesforce.com Through the OData Connector".