1. Coinmarketcap.com (I visit here to check altcoins price)
2. Blockchain.info (I always open this tab to monitor BTC price)
3. Faucethub.io (To earn altcoins from faucets)
4. https://luckygames.io/?ref=8059229 (I play gambling here and earn some altcoins and keep them to sell when the price is rise)