Trading Blox Builder is a sophisticated trading system development environment for historical simulation and trading. Trading Blox™ Builder is a software application that runs simulations of trading rules over historical end-of-day or intraday Futures, Stock, ETF, Mutual fund, or Forex price data, and determines the trades that those rules would have entered and the performance they would have exhibited. Trading Blox Builder features excellent testing, trading and charting features and is equipped with the Blox Basic programming language to build and script custom systems with parameters, indicators, variables, and rules-based triggers.