Seer is an application for the building, backtesting and optimizing of stock, futures and forex trading systems. Seer is able to backtest and optimize multiple systems, with each system using a portfolio of symbols across multiple time frames using advanced position sizing. Regardless of the complexity of your system rules or the number of symbols used, Seer performs backtesting in a single pass with account cash balances and position values available for each bar (even when a forex pair doesn't contain the base currency). This allows you to build complex position sizing while managing your risk. Seer supports a whole set of technical analysis indicators including a framework for building your own, using a simple but powerful scripting environment. Seer also includes advanced order handling, with market, stop, limit and stoplimit orders all supported natively (backtesting and live). You can also place multiple orders per symbol, with implicit Time in Force (TIF) and implicit One Cancels All (OCA) options available.