SpreadSheetPlugin(2010-05-22, $Rev: 18825 (2010-05-29) $): Add spreadsheet calculation like "$SUM( $ABOVE() )" to TWiki tables or anywhere in topic text
CommentPlugin(2010-05-16, $Rev: 18706 (2010-05-29) $): Allows users to quickly post comments to a page without an edit/preview/save cycle
EditTablePlugin(5.1, $Rev: 18808 (2010-05-29) $): Edit TWiki tables using edit fields, date pickers and drop down boxes
HeadlinesPlugin(2.6, $Rev: 18707 (2010-05-29) $): Show headline news in TWiki pages based on RSS and ATOM news feeds from external sites
InterwikiPlugin(2010-05-15, $Rev: 18695 (2010-05-29) $): Link ExternalSite:Page text to external sites based on aliases defined in a rules topic