As of June 2024, several cryptocurrencies have shown significant activity and volatility, making them worth noting for investors and traders. Here are some of the most active cryptocurrencies:

1. Bitcoin (BTC): Bitcoin remains very active due to its market dominance and high transaction volume.

2. Ethereum (ETH): Ethereum remains a major player with its widespread use in decentralized applications and smart contracts.

3. Binance Coin (BNB): Binance Coin has been active, especially with its widespread use on the Binance exchange and its ecosystem.

4. Tether (USDT): As a leading stablecoin, Tether maintains high activity levels due to the key role it plays in providing liquidity across the market.

5. Solana (SOL): Solana is known for its fast transaction speeds and growing ecosystem, making it a popular choice among developers and traders.

6. PEPE: This meme coin has seen a surge in activity, driven by community interest and speculative trading.

7. Dogecoin (DOGE): Dogecoin remains a popular meme coin with high transaction volume and high community participation.

These cryptocurrencies are experiencing high levels of trading activity, making them important players in the current market landscape. Investors and traders should pay close attention to potential opportunities with these coins.