After #bitcoin several cryptocurrencies emerged,often referred as #altcoins .Here's a list of some notable ones that came after bitcoin.

1. Ethereum $ETH 2015: Known for its smart contract functionality, Ethereum allows developers to build decentralized applications (dApps) on its blockchain. It has a large ecosystem and is the second-largest cryptocurrency by market cap.

2. Litecoin (LTC) 2011: Often referred to as the silver to Bitcoin's gold, Litecoin was designed for faster transaction confirmation times. It uses a different hashing algorithm (Scrypt) and has a capped supply of 84 million coins.

3. Ripple (XRP) 2012: Ripple focuses on facilitating cross-border payments and aims to enable secure, instant, and low-cost international transactions. It has partnerships with various financial institutions.

4. Bitcoin Cash (BCH) 2017: Created as a fork of Bitcoin, Bitcoin Cash was developed to allow for larger block sizes, which can accommodate more transactions and reduce fees.

5. Cardano (ADA) 2017: Cardano is known for its research-driven approach and aims to provide a more secure and scalable blockchain. It uses a proof-of-stake consensus mechanism called Ouroboros.

6. Polkadot (#dot) 2020: Polkadot allows different blockchains to communicate and share information, enabling a more interconnected ecosystem of cryptocurrencies.

7. Chainlink (Linkk 2017: Chainlink provides decentralized oracles, which allow smart contracts to access real-world data. This is crucial for many applications that require external information.

8. Stellar 2014: Stellar focuses on facilitating low-cost cross-border transactions, particularly for the unbanked population. It aims to connect financial institutions and reduce transaction costs.

9. Binance Coin $BNB 2017: Initially created as a utility token for the Binance exchange, BNB has expanded its use cases and is now used for various applications on the Binance Smart Chain.

10. Dogecoin $DOGE 2020: Originally created as a meme, Dogecoin has gained popularity and a strong community. It’s known for its fun branding and has been used for tipping and charitable donations.