All the Web Services available in SharePoint 2010

SharePoint Foundation 2010 :

Has a range of "WebServices" available, but we often use Lists.asmx and few more.

Though with SharePoint 2013 _api calls have become more important, I am listing down all the available ".asmx" s for future reference.

For SharePoint  Server 2010 there are some more, which i'll list later.

Web Service	Url for Calling the WebService	Description
WebSvcAdmin	http://Site/_vti_bin/Admin.asmx	Provides methods for managing a deployment of SharePoint Foundation, such as for creating or deleting sites.
WebSvcAlerts	http://Site/_vti_bin/Alerts.asmx	Provides methods for working with alerts for list items in a SharePoint Foundation site.
WebSvcAuthentication	http://Site/_vti_bin/Authentication.asmx	Provides classes for logging on to a SharePoint Foundation site that is using forms-based authentication.
WebSvcBdcAdminService	http://Site/_vti_bin/BdcAdminService.asmx	Provides methods that can be used to import and export Business Data Connectivity Services (BDC) models.
WebSvcCellStorage	http://Site/_vti_bin/CellStorage.asmx	Enables client computers to synchronize changes made to shared files that are stored on a server.
WebSvcCopy	http://Site/_vti_bin/SvcCopy.asmx	Provides methods for copying items between locations in SharePoint Foundation.
WebSvcdiagnostics	http://Site/_vti_bin/diagnostics.asmx	Enables client computers to submit diagnostic reports that describe application errors that occur on the client.
WebSvcDspSts	http://Site/_vti_bin/DspSts.asmx	Provides a method for performing queries against lists in SharePoint Foundation.
WebSvcDWS	http://Site/_vti_bin/DWS.asmx	Provides methods for managing Document Workspace sites and the data they contain.
WebSvcForms	http://Site/_vti_bin/Forms.asmx	Provides methods for returning forms used in the user interface when working with the contents of a list.
WebSvcImaging	http://Site/_vti_bin/Imaging.asmx	Provides methods that enable you to create and manage picture libraries.
WebSvcLists	http://Site/_vti_bin/Lists.asmx	Provides methods for working with lists and list data.
WebSvcMeetings	http://Site/_vti_bin/Meetings.asmx	Provides methods that enable you to create and manage Meeting Workspace sites.
WebSvcPeople	http://Site/_vti_bin/People.asmx	Provides methods for working with security groups.
WebSvcPermissions	http://Site/_vti_bin/Permissions.asmx	Provides methods for working with the permissions for a site or list.
WebSvcSharedAccess	http://Site/_vti_bin/SharedAccess.asmx	Provides a method that determines whether a document is being coauthored.
WebSvcsharepointemailws	http://Site/_vti_bin/sharepointemailws.asmx	Provides methods for remotely managing distribution groups.
WebSvcSiteData	http://Site/_vti_bin/SiteData.asmx	Provides methods that return metadata or list data from sites or lists in SharePoint Foundation.
WebSvcsites	http://Site/_vti_bin/sites.asmx	Provides methods for working with Web sites.
WebSvcspsearch	http://Site/_vti_bin/spsearch.asmx	Provides methods for remotely performing searches within a SharePoint Foundation deployment.
WebSvcUserGroup	http://Site/_vti_bin/UserGroup.asmx	Provides methods for working with users and groups.
WebSvcVersions	http://Site/_vti_bin/Versions.asmx	Provides methods for managing file versions.
WebSvcviews	http://Site/_vti_bin/views.asmx	Provides methods for working with list views.
WebSvcwebpartpages	http://Site/_vti_bin/webpartpages.asmx	Provides methods to send and retrieve Web Part information to and from Web services.
WebSvcWebs	http://Site/_vti_bin/Webs.asmx	Provides methods for working with Web sites and content types.