Emercoin (EMC) is the mineable coin based on the Emercoin’s own blockchain. You can convert these coins to other cryptos and back on a few exchanges. Emercoin was launched as early as in 2013 as the Peercoin’s fork.
Pundi X (NPXS) is the utility token of the eponymous platform and based on the Ethereum protocol. The cryptocurrency pairs including NPXS are listed on multiple exchanges.