Forever Coin (XFC) started in 2015 and finished in 2017, with a total supply of unknown coins. The team/founder is hidden, The main reason this coin was listed is desertion.

(from old site) Forever Coin was inspired by Blackcoin. and it shares much of the source code and technical implementation of Blackcoin. The ForeverCoin source code is distributed under the MIT/X11 software license. ForeverCoin has 105 Million coins for initial distribution and a hard limit on the number of possible coins of 210 Million.