Building and Installing Guide
Official Blackcoin website
Coinkite webwallet
HolyTransaction webwallet
CoinToPay webwallet
Coinomi Android multicoin wallet
Janko33's Blackcoinj android wallet https://goo.gl/Z4VQFe
Exchanges
BitTrex
BTC38 requires Facebook/QQ
Jubi
Cryptsy
Poloniex requires ID ...