A good start

This would receive a much higher rating if it were not for the lack of customization, in particular the speed of the ticker and the width (and font). It would then be a super contender. For Windows the standard for me was WorldFlash and something like that is needed for the Mac. This app is a decent 1.xx version but needs some attention for user customization other than that which is given.

Rebraun about Scrolling News Ticker