1. Darkcoin (X11 / PoW/PoS): Bitcoin CoinJoin and not 100% anon as promised. Instamined half of current outstanding coins or about 2million within 24hrs. gmaxwell the creator of CoinJoin and Bitcoin dev believed this was a SCAM coin;
https://bitcointalk.org/index.php?topic=641178.402. Cloak (X13 / PoW/PoS): Laundering through exchanges, LOL
3. Mastiffcoin (X11 / PoW/PoS): Laundering through exchanges, LOL
4. Vericoin (Scrypt / PoW/PoS): Nothing to show for except promises
5. Pinkcoin (X11 / PoW/PoS): Centralized mixer
6. Cryptcoin (X11 / PoW/PoS): Nothing to show for except promises
7. Libertycoin (X11 / PoW/PoS): Nothing to show for except promises
8. Honorcoin (X11 / PoW/PoS): Nothing to show for except promises (SCAM)
9. Dreamcoin (X11 / PoW/PoS): Nothing to show for except promises
10. Cinni: (Scrypt / PoW/PoS): Nothing to show for except promises
11. Boost: (X13 / PoW/PoS): Nothing to show for except promises
12. Anoncoin (PoW Scrypt): IP obfuscation
13. TIPS (PoW Scrypt): Centralized mixer
14. Bytecoin-BCN (PoW): 99% premine of circulating coins + problematic codebase coupled with good anonymity (+2 years in development and still in infancy regarding basic stuff like GUI)
15. Bytecoin clones (PoW): Increasing in numbers every day diluting that field. MRO gets a special mention due to being the first clone. BBR gets another special mention for having a good dev. Still they experience significant problems due to the new codebase.
16. Zerocoin: DOA (?) / delayed for months
17. NXT (PoS): In discussions relative to anonymous implementation
vs
XC: First anonymous coin with encrypt Android wallet/message, Blockchain 2.0 ...
People do not see the real potential in this coin but rather drop in volume and price which really disappoints me.