Shorting stock isn't necesarily a trading software issue, it's a broker issue. Brokers don't allow just anyone to short, they evaluate your account and decide

Shorting stock isn't necesarily a trading software issue, it's a broker issue. Brokers don't allow just anyone to short, they evaluate your account and decide what ammount they'll let you short for. (This way you can't short more than you own, and then leave them on the hook for the difference if the stock rises past what you own). I use Schwab, they have a great trading platform, easy to use, and easy accounts to set up.