My problem is that I have so many names that it functions very slowly when deleting them. I do currently use the jkp one, and it is functional and certainly better than nothing. Why not try it out and see whether it meets your needs before seeking alternatives? Maybe there are others, but this is the most used. The add-in that I linked in the OP actually has a lot of functionality, but it gets really hung up sometimes and freezes The jkp one is arguably the best.
I'd also like the ability to show names that have errors in them.
