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.
Ive heard xtrabytes and safex but sadly these coins has not shown any progress in the market. Much better invest on altcoins that are top in the market and continue on developing about the project. Though there is always a risks in crypto so you should be choosing best coins to invest these days.