Many brokers offer exclusive web-based trading platforms that allow you to trade only through the browser, thus avoiding software downloads. This can be very useful for Mac owners or traders who may not have access to their personal PC for hours.
This web platform tends to be less feature rich than Metatrader. However, you must still be able to perform the basic functions of trading and charting. For beginner trading or less technical, online forex platforms tend to be more intuitive and user-friendly.
There may even be some advantages to using a web-based platform with several brokers. For example, Lite Forex only provides guaranteed stop-loss for transactions made through Webtrader and also makes the 'Inside Viewer' and 'Trade Controller' tools also available through Webtrader.