The TestRunner has the option to generate and XML report. The idea being that another process may read the XML outputs and generate some other report. It has been suggested that the XML follow the JUnit format although it doesn't seem to fit.

example command line: java fitnesse.runner.TestRunner -xml stdout localhost 9123 PageName

Test Runner Fixture
args	page name	output?
-xml stdout	SuiteFodder.TestPassing	$testXml=

script	string comparator
ensure	string	$testXml	starts with	<?xml version="1.0"?>
ensure	string	$testXml	ends with	</testResults>\n\n
ensure	string	$testXml	contains	<pageHistoryLink>SuiteFodder.TestPassing?pageHistory

Test Runner Fixture
args	page name	output?
-xml stdout	SuiteFodder	$suiteXml=

script	string comparator
ensure	string	$suiteXml	contains	<right>1</right>
ensure	string	$suiteXml	contains	<wrong>1</wrong>
ensure	string	$suiteXml	contains	<ignores>1</ignores>
ensure	string	$suiteXml	contains	<exceptions>1</exceptions>