Two variations are available;
LotLoss
Simple risk management tool.
Coin Toss Trading
This script opens a buy or sell order randomly having equally spaced take-profit and stop-loss levels.
MultiMartin
This is a multi-currency expert adviser based on reversal strategy with martingale. Original idea is taken from ExpMartin for MT4.
BPNN MQL Predictor Demo with library
This is a demo indicator with BPNN neural network library ported from C++ to MQL.