Question: I need a solution that connects to multiple global exchanges, including cryptocurrency, futures, and stocks, for seamless trading.

If you're looking for a more comprehensive solution that integrates with multiple exchanges around the world, including cryptocurrency, futures and stocks, ATAS is a top contender. It offers integration with over 25 exchanges and a range of tools, including order flow analysis, 70+ volume analysis tools and 240+ technical indicators. The platform also comes with features like customizable charts, a trading simulator and a market replay function, which can be useful for making more informed decisions. Pricing options include a free START plan and a Lifetime plan for unlimited use.

Another contender is Alpaca, an API-based service that lets developers and businesses integrate stock, options and crypto trading into their own apps. It offers modern APIs with secure key management and commission-free stock trading. Alpaca supports several programming languages and is geared for businesses and individuals interested in embedded trading and algorithmic trading strategies.

If you need real-time financial data and alternative data, Finnhub is a good option. It offers institutional-grade data through RESTful APIs and WebSockets for stocks, ETFs, Mutual Funds, Indices, Futures, Options, Currencies and Cryptocurrencies. Finnhub also offers detailed financial statements and real-time market data, making it a good option for financial analysts and traders who need a lot of and reliable financial data.

Last, QuantConnect is a powerful platform for algorithmic trading that lets you create and execute trading strategies across multiple assets. It includes cloud-based tools for backtesting and live trading, and access to terabytes of financial, fundamental and alternative data. It's a good option for quants and engineers who want to customize their trading strategies with a large library of alternative data and scalable cloud compute.