AS/400 still exists actually, under the name IBM i. I know a person who swears by them. It's a fascinating system. There are no files, only persistent objects l

AS/400 still exists actually, under the name IBM i. I know a person who swears by them. It's a fascinating system. There are no files, only persistent objects living in a 128-bit address space. Downside: still uses EBCDIC….