Software for market manipulation?

[Sapphire]

Hi guys!

There must be people who trade with big volumes here. I wonder, do you use any software to automate that?
For example, to move your "walls" in the orderbook quickly and carefully. To spread your buying/selling orders within a range of price. To buy/sell automatically at some level, but staying invisible for the orderbook until you do. Other stuff. Some of these things are even quite impossible to do without automation. Do you use something for that?