Most brokerages offer trading softwarearmed with a variety of trade, research, stock screening, and analysis functions, to individual clients when they open a brokerage account. While that's debatable, it's certainly true that a key part of a trader's job - like a radiologist's - involves interpreting data on a screen in fact, day trading as we know it today wouldn't exist without market software and electronic trading platforms.Ī lot of software applications are available from brokerage firms and independent vendors claiming varied functions to assist traders. There are those who say a day trader is only as good as his charting software.