Thinkorswim.ca - Highly recommended. The company has some of the best customer service . An outstanding suite of tools and software packages that will appeal to buy-and-hold investors and active traders. They offer a stand-alone software package, web-based trading, mobile trading and "thinkanywhere", which is a wireless trading application. The company offers very reasonable commissions as well - you can choose a per share rate of $.015 or a flat fee trading rate of $9.95 per trade. For options, the company charges $1.50 per contract with a minimum spend of $7.50 per contract.