Microsoft SharePoint 2010 SiteMap Providers

SPNavigationProvider
SPSiteMapProvider
SPContentMapProvider
SPXmlContentMapProvider
ExtendedSearchXmlContentMapProvider	Provider for navigation in Extended Search pages
AdministrationQuickLaunchProvider	QuickLaunch navigation provider for the central administration site
SharedServicesQuickLaunchProvider	QuickLaunch navigation provider for shared services administration sites
PWASiteMapProvider	Project Web App provider for global navigation
GlobalNavSiteMapProvider	CMS provider for Global navigation
CombinedNavSiteMapProvider	CMS provider for Combined navigation
CurrentNavSiteMapProvider	CMS provider for Current navigation
CurrentNavSiteMapProviderNoEncode	CMS provider for Current navigation, no encoding of output
GlobalNavigation	Provider for MOSS Global Navigation
CurrentNavigation	Provider for MOSS Current Navigation
SiteDirectoryCategoryProvider	Site Directory category provider
MySiteMapProvider	MySite provider that returns areas and based on the current user context
MySiteLeftNavProvider	MySite Left Nav provider that returns areas and based on the current user context
MySiteSubNavProvider	MySite Sub Nav provider that returns areas and based on the current user context