There are a lot of them, don't know which to choose 
You can reference TEND. TEND democratizes access to unique, meaningful assets and experiences by using blockchains smart contract technology. TEND is based in Zug, Switzerland and founded by Marco Abele (ex-Chief Digital Officer at Credit Suisse).
I think it will be success in the future. you can get more information about TEND here: https://bitcointalk.org/index.php?topic=2867400