These aren't really coins, but are contracts that are kind of like coins. Kind of like shares of a company that are represented by coins/tokens. They can be used various ways, but are usually advertised as if they are Cryptocurrency, but are not really. https://www.ethereum.org/token https://bitshares.openledger.info/account/(your Open Ledger username)/assets/
Not exactly sure what this is, it claims to be an in wallet coin creator, and I assume it is like the ethereum and bitshares assets/contracts, but it may actually be an in wallet coin creator. https://bitcointalk.org/index.php?topic=1699319.0