Interesting things happening at Viacoin.
They forked Counterparty and Counterwallet, and are called Clearinghouse and Clearwallet. The project serves as a decentralized currency and asset exchange which relies on the Viacoin blockchain.
Peter todd, a former bitcoin developer, serves as chief scientist of the project.
Videos and demos of the protocol and clearwallet can be seen here:
http://blog.viacoin.org