TradeSatoshi just listed TurtleCoin. (You can read bout it here.) This is TurtleCoin's first official exchange, which could mean it's likely to go up in price. Since the announcement, TurtleCoin already went up by over 50 %.
TurtleCoin is a fork of Bytecoin. It's an open source crypto with a strong community. Right now it's still unheard of and undervalued. It hasn't been listed on coinmarketcap or coingecko, so it has little mainstream exposure. The devs have a unique view of spending $0 in marketing but want the coin to spread by word of mouth. So far the Turtlecoin community has over 5,000 members in their discord and many volunteer devs working on it.
It's certainly promising. You can read more about its merits here.