Good trading systems include derivatives booking, risk analysis and pricing and PnL calculation&analysis. The large trading firms all have their own system developed by Java or C#. Typical system in the market are like: Clypso, Murex, Sungard...
If you are starting up your derivatives trading, you can also try to manually manage the sheets and then to build your own after a while.   

外汇交易中心交易系统、路透、彭博；路透Kondor+，OPICS系统，Risk Mstrix等交易和风险管理系统，这些涉及交易、定价、总中台管理的一些系统。我也单位推这些事情，有机会多交流