You can query the WebLink SObject to find the information you need:
Select w.Width, w.Url, w.SystemModstamp, w.ShowsStatus, w.ShowsLocation, w.ScontrolId,
w.RequireRowSelection, w.Position, w.PageOrSobjectType, w.OpenType, w.NamespacePrefix, w.Name,
w.MasterLabel, w.LinkType, w.LastModifiedDate, w.LastModifiedById, w.IsResizable,
w.IsProtected, w.Id, w.Height, w.HasToolbar, w.HasScrollbars, w.HasMenubar, w.EncodingKey,
w.DisplayType, w.Description, w.CreatedDate, w.CreatedById
From WebLink w