The Layer2 Business Data List Connector for SharePoint 2007, 2010 and 2013 connects almost any external data source to native SharePoint on-premise lists (e.g. contacts, tasks, events, news or custom lists) codeless and in just minutes with ALL list features available - even search, lookups, metadata, change notifications and workflows. It highly simplifies your SharePoint architecture, improves performance and solves many issues that still exist with SharePoint out-of-the-box data integration via BCS.
Any plans to move your SharePoint to the cloud? The Layer2 Cloud Connector for Office 365 and SharePoint can connect local and cloud-based business-critical data and applications to reach a new level of cross-team collaboration, decision making and process efficiencies. It highly increases the benefit of your existing IT investment into SharePoint and Office 365.