In a past entry, I mentioned a few worthwhile interval timers. Many readers then listed additional options within the comment section of the blog. You can catch up at this link:
To those looking for another Tabata interval timer, take a look at the link below. I was recently contacted by the developer. In his words, the timer is available for Windows, Linux, Mac and in an alpha-release for
mobile-devices that support java-me. Check it out.