Marketcetera is described as 'Java-based open source automated trading platform with FIX connection' and is a trading platform in the business & commerce category. There are 2 alternatives to Marketcetera for Windows. The best Marketcetera alternative is EA Generator. It's not free, so if you're looking for a free alternative, you could try TradeLink.
EA Generator or EA Creator is unique software without analogues. The biggest advantage of this software is that it is based on a neural network that reveals the implicit connection to currency movements that can’t be predicted by standard indicators.
Open source trading platform written in C#, with barebones UI. Components include strategy development, backtesting, algorithmic trading, discretionary trading.
