At this moment I found Burst, it is Proof Of Capacity based cryptocurrency that you mine just by plotting your free hard drive space (HDD).
They are about to have (Lightning Network/Ring Signatures / Tangles /Zk -Snarks/ Atomic Swaps) check their WP.
HDD space used to mine Burstcoin and it is not the same as Stroj as their are more as the cloud provider.
Quite nice community and the team seems to be back on track, they are implementing a hard fork really soon. https://www.burst-coin.org/
Also there are StorageMining.io - creating cloud storage mining service - for less techie people to mine Burst.
Take a look, thank you for your time.