WordPress.org

With Link Summmarizer you can produce a list of all the links you referred to in a posting. You can exclude links from the summary by specifying regular expressions for links that shouldn't show up. You can enable/disable the link summary globally through the Options page of Link Summarizer, but you also can enable/disable the display of the summary for specific post by specifying a custom flag named "lnsum_show" (without quotes) and setting a value of 0 (disable) or 1 (enable). You also can choose the regex engine to use (the standard php one or the PCRE extension)

Authors: GrafZahl, rigacha