Blackcoin
I still work on the good old PoS although under a new project name. At some point a leasing mechanism was added, but it's truthly optional. Right now a 5th upgrade of the protocol is being researched. You can check out the thread where BlackCoin was originally announced:
https://bitcointalk.org/index.php?topic=469640.0Do you think there's hope for PoS to become decentralized again?
Black them out.