This wiki plugin will list all pages that link to a specific page in the site. Information about the pages may also be displayed.
If page information (such as hits or user) is specified, then a simple table will be produced. So this code,
{backlinks page="Documentation" info="hits|user" exclude="SandBox"}
Would produce on this site: 5 pages link to Documentation
One tracker item links to Documentation
If only the page name is to be listed, then a bulleted list is produced. So this code,
{backlinks}
Would produce on this site: 8 pages link to PluginBacklinks