Above.com is a great product to manage you domains. I use it regularly.

My favourite thing about above.com is being able to track the domains we purchase in an organized manner and also see the return on investment values should we ever wish to sell those domains. We have sold a few in the past upon no longer needing them (for celebrity clients we no longer manage), which brought back money which we probably would have not seen again had we just left them up and running and into the ether.