Stock market platforms are online services that allow individuals to buy and sell shares of companies. These platforms provide tools for trading, research, and analysis, making it easier for investors to manage their portfolios. Popular examples include Robinhood, E*TRADE, and TD Ameritrade. Users can access real-time market data, place trades, and track their investments through these platforms. Many also offer educational resources to help beginners understand the stock market. Overall, stock market platforms play a crucial role in modern investing by providing convenient access to financial markets.