Question: Can you recommend a service that provides backtesting and analytics for algorithmic trading strategies?

If you're looking for a full-service offering that includes backtesting and analytics for algorithmic trading strategies, Tradetron is a great option. Tradetron is a multi-asset, multi-currency and multi-exchange platform that lets users create, backtest and execute trading strategies without any programming. The platform includes a web-based strategy builder, a powerful backtesting engine, social trading, execution algos and detailed reports for optimizing strategy performance. It also supports a variety of broker APIs for easy integration with existing trading infrastructure, making it a good option for bringing trading ideas to life and monetizing them.

Another option is Alpaca. Alpaca offers a range of tools for investing, brokerage, custody and post-trade processing through an API. It supports a range of programming languages and offers modern APIs with OAuth integration for secure key management. Alpaca is good for businesses and individuals who want to build trading into their apps, especially those with an interest in automated trading and algorithmic strategies. Although it doesn't charge commissions, you should be aware of the trading and investing fees.

For those interested in AI-driven trading, Composer offers a user-friendly interface with natural language-based strategy creation and automated trading. It integrates with retirement accounts and offers prebuilt strategies that can be customized. Composer offers both free and paid tiers, with the paid tier offering unlimited automated trading and real-time portfolio monitoring.

Last, CryptoQuant offers a comprehensive on-chain and market analytics platform designed for cryptocurrency investors. It offers a range of data solutions, customizable analytics tools and real-time alerts. Users can create custom metrics and build interactive dashboards, making it good for trading and risk management. The platform offers a range of pricing tiers, including a free basic plan, for different levels of professional use.