Origin Protocol (https://www.originprotocol.com) is a project building protocols for sharing economy marketplaces.

We just launched our demo DApp on the Ethereum Rinkeby test network. Would appreciate any feedback and pull requests!

https://medium.com/originprotocol/origin-demo-dapp-is-now-live-on-testnet-835ae201c58

If you have Metamask and test Ether, you can dive in and start playing with it at:

https://demo.originprotocol.com

Tweet at @originprotocol if you want us to send you some test Ether to get started!