CoinSpark is a lightweight bitcoin 2.0 solution for transferring assets using OP_RETURN.

If you're in San Francisco this week, there's a mini meetup on Wednesday evening (8th Oct 2014) , just a block away from the Uber and Twitter offices.

https://www.eventbrite.com/e/bitcoin-20-op-returns-the-blockchain-as-tcpip-registration-13209506991