Mac Authoring Tools - Help Needed

I was just asked a question and was a bit at a loss for a response. This organization predominantly has Macs and would like to use something like Articulate or Captivate to:

"convert our existing Powerpoint trainings, include quizes, track responding, track time spent enaged, insert Quicktime movies and deploy via the web."

For so long, Adobe has had products on both Mac and PC, I assumed that Captivate had a Mac version - but I didn't find one.

Any suggestions?