Framework Forex expert advisor uses three Commodity Channel Index (CCI) indicators crosses to determine position opening and closing. It is very simple, yet effective expert advisor. It also performs checks for available free margin to stop trading if it is bankrupt. This EA doesn't trade if bars didn't change or there were no 100 bars yet.
My test of Framework MetaTrader expert advisor gave a very good result using GBP/USD pair on a daily chart using just 0.1 standard lots - about $20,000 profits over $10,000 account in one year, with just about $2,000 maximum drawdown. I've also checked it on a three years period and its performance showed the same stability.