Fortunejack is one of the biggest bitcoin casino sites and they decided to run sportsbook, which is great. They are one of the most reliable and trustworthy sites out there and with current very good odds are competitive to the best bookmakers online. They are the real deal.
mbit – Offers fast transfers and very good support. Sports betting and casino.
Coinbet24 is a solid bookmaker and first licensed Bitcoin-only sportsbook. If you are a football bettor or you like live betting definitely go check the site.
Betcoin – if you like sports betting and at the same time poker, this is definitely the site to check and try. They have one of the best poker rooms out there.
Onehash – mutual betting. Cool site!
BetBTC – bitcoin betting exchange