Sort:  

Augur has a prediction market beta platform available at https://app.augur.net
I've had a look at is a while back and from a user point of view it was horribly complicated.

Wagerr allowed bets on the Mayweather Fight

For as far as I know that was about it for now in terms of functional betting.

Coin Marketplace

STEEM 0.20
TRX 0.13
JST 0.030
BTC 67310.11
ETH 3522.28
USDT 1.00
SBD 2.71