Online brokers vary in their quality, trading tools and fees. A number of Web sites regularly track the performances of online brokers and share this information on their respective Web sites.

If you’d like to see how your trading service, or one you are considering, measures up to other candidates in the online trading field, you may want to spend a few moments examining what the following sites have to say:

• Bankrate.com

www.bankrate.com/brm/news/investing/20010601a.asp

Measures quality of online brokerages by services, fees and policies.

• Gomez .com

www.gomezadvisors.com

Select broker ratings under “Scorecards” and “Performance.”

• Money.com

www.money.com/money/depts/investing/ebrokers

Rates online brokers using a five-star system.

• Smartmoney.com

www.smartmoney.com/brokers

Ranks brokers by service quality, fees and products.