Xtrabytes and Safex?
The safex has indeed been forgotten. This is a sad thing, and apparently their CEO has given up. they only post bland updates every week, but nothing is noticeable.
I think it died from inside and will soon be removed from CMC.
I'm doing some preliminary research on Safex Cash for a book I am writing. They are not represented by a company as far as I can tell; instead they are a group of crypto enthusiasts. The CEO (i.e. Chief Architect) is still alive - here's an interview he gave about 2 months ago :
https://blocktv.com/watch/2019-09-10/5d77dc5777e7b-d-dd-daniel-dobek-safex?utm_source=altcoininvestigation.com&utm_medium=bitcointalk. Both Safex Cash and Safex Token are from the same group of people. Their activity on bitcointalk is limited, but they appear much more active on their own forum :
https://safe.exchange/.