Here are some key features and aspects of CoinMarketCap:

1. Cryptocurrency Listings: CoinMarketCap tracks and provides information on thousands of cryptocurrencies, including well-known ones like Bitcoin, Ethereum, Ripple (XRP), Litecoin, and many others, as well as lesser-known or newly-launched cryptocurrencies.

2. Price and Market Data: CoinMarketCap offers real-time price updates for cryptocurrencies, as well as historical price charts to track their performance over time. It also displays market capitalization, trading volume, and other relevant metrics.

3. Market Rankings: The platform ranks cryptocurrencies based on their market capitalization, providing insights into the most valuable and traded digital assets.

4. Exchanges and Trading Pairs: CoinMarketCap lists the exchanges where each cryptocurrency can be traded and provides information about trading pairs available on those exchanges.

5. News and Insights: The platform features news articles and insights related to the cryptocurrency market, offering users valuable information to make informed decisions.

6. Portfolio Tracking: Users can create accounts on CoinMarketCap to track their cryptocurrency portfolios, allowing them to monitor their investments in one place.

7. Educational Content: CoinMarketCap provides educational content about cryptocurrencies and blockchain technology for beginners and experienced users alike.

8. API Access: CoinMarketCap offers an API (Application Programming Interface) that allows developers to access its data and integrate it into their applications or websites.

Since the cryptocurrency market is highly dynamic, with new developments and changes occurring frequently, it's essential to visit the official CoinMarketCap website or check for the latest information to see if there have been any updates or new features introduced after my last update in September 2021.