I've used Ratiional ClearCase and ClearQuest in the past, but it's been a long time - at least seven years since I used CQ, and probably a decade since I used CC. On a project where we used both, I had them integrated. (I used them enough to refer to them collectively as ClearWaste.)I'm currently tasked with evaluating various CM-related suites for where I'm working now, and I'm finding it very confusing to determine just what IBM is currently offering.I see ClearCase and ClearQuest are still sold. Are they actively supported?As far as I can tell, DOORS and DOORSNg have replaced RequisitePro.I see there's Jazz and Team Concert -- what's the difference between the two?Does Team Concert use the other tools like ClearCase, ClearQuest, and DOORS? Does it replace them?And finally, do the IBM tools still have a very high cost compared to tools like the Atlassian Suite and Microsoft TFS?I've tried exploring the IBM web site, but they're fond of using Youtube videos, and my company blocks YouTube. We're also limited to using Internet Explorer, and I've had trouble getting the IBM demos to work with it. 
What is the current status of the IBM/Rational Tool Suite?
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