UNINSTALL: internet speed radar??

I inadvertantly installed malware (I think it MUST be) by downloading the install for Internet Speed Radar as I wanted to see if the streaming to my computer was fast enough to subscribe to a Movie/TV watching site .... Netflix who supplied a link to where I found the above mentioned link. I now realise that it was one of a group of several such supposed internet bandwidth speed testers. I wanted only to view what it was about, but in one click it went to 'Downloads' and subsequently disappeared. Using SAFARI to open my home page, "Google search" I now first get a 'Successfully downloaded page' from Internet Speed Radar', but no working links after that. Nothing to be seen in Downloads therefor unable to delete or uninstall. How can I manually uninstall this beast-anyone able to assist? THANX.