SharePoint Workspace is part of the Office Professional Plus 2010 suite, and it’s designed specifically to support remote and offline SharePoint users who need to work offline or have minimal access to SharePoint servers.
With SharePoint Workspace, an end user can easily connect to a designated SharePoint site, get a local copy of selected SharePoint libraries and lists, and add or modify library or list content within a private “SharePoint workspace”. Content in a SharePoint workspace automatically synchronizes with the associated SharePoint site when users are on their network, or it can be manually synchronized on demand. No browser access needed and no need for VPNs or special IT setup.
To learn more about SharePoint Workspace 2010, read Mena Paton's Blog post on the "To the SharePoint" Blog: Introducing SharePoint Workspace 2010.