The Mobile Test Workbench for Worklight is able to generate a report with the .moebreport extension.
From this IBM Worklight Information Center:
You can choose to view the test reports on the mobile device, on an emulator, or on the test workbench.
Is it possible to change the report's extension (e.g. to .html) so that other people who do not have Rational Test Workbench installed still be able to view it?
No, you cannot change the extension, but you can easily see the report in a browser using the following REST service:
http://hostname:port/moeb/service/com.ibm.rational.test.lt.core.moeb.services.reports.IReportService/?action=browse&path=path_of_the_moebreport
For example:
http://127.0.0.1:7878/moeb/service/com.ibm.rational.test.lt.core.moeb.services.reports.IReportService/?action=browse&path=%2FMobile%2Ftest4_1369647998749.xmoebreport
RTW should be open to be able to vizualize a report in a browser
