1. Bitcoin (BTC): Bitcoin is the largest and most well-known cryptocurrency, and has experienced tremendous gains since its inception. It reached an all-time high of nearly $65,000 in April 2021.

2. Ethereum (ETH): Ethereum is the second-largest cryptocurrency by market capitalization. It has seen impressive gains, particularly with the rise of decentralized finance (DeFi) applications. It reached an all-time high of over $4,300 in May 2021.

3. Binance Coin (BNB): Binance Coin is the native cryptocurrency of the Binance exchange. It has seen significant gains due to the popularity of the exchange and its ecosystem. It reached an all-time high of over $600 in May 2021.

4. Cardano (ADA): Cardano is a blockchain platform that aims to provide a secure and scalable infrastructure for the development of decentralized applications and smart contracts. It has gained popularity in recent years and reached an all-time high of over $2 in May 2021.

5. Ripple (XRP): Ripple is a digital payment protocol and cryptocurrency that has gained traction in the financial industry. It reached an all-time high of over $3 in January 2018, but has since experienced significant volatility.

6. Solana (SOL): Solana is a high-performance blockchain platform that focuses on scalability and speed. It has gained attention for its ability to handle a large number of transactions quickly and cheaply. It reached an all-time high of over $200 in May 2021.

7. Polkadot (DOT): Polkadot is a multi-chain platform that allows different blockchains to interoperate and share information. It has gained popularity for its scalability and interoperability features. It reached an all-time high of over $40 in May 2021.

8. Dogecoin (DOGE): Dogecoin started as a meme cryptocurrency but gained popularity due to celebrity endorsements and social media attention. It reached an all-time high of over $0.70 in May 2021.

It's important to note that cryptocurrency prices are highly volatile and can experience significant fluctuations. Investing in cryptocurrencies carries risks, and it's essential to conduct thorough research and consider your risk tolerance before making any investment decisions.