Although most people dry clothes in a dryer, it isn't always the best choice. If you live in a home with central heating using a furnace, then it is better to make use of the dry warm air that it produces. By hanging clothes to dry by a vent, you can humidify the room and dry your clothes at the same time.
Another method is using a dehumidifier. If you do not want to purchase a dryer, a dehumidifier works fairly well to dry clothes and can dry clothes almost as fast as a dryer. If you live in a sunny area, the sun will also work just fine.