If you don't have floor space for a clothes rack or can't hang clothes outside (rain or foolish homeowners association), use the airspace in your home instead. The most reliable indoor passive dryer is to buy an additional adjustable shower curtain rod ($6-$11 at Walmart) to span the inside center of your shower(s) or tub(s) parallel to your regular shower curtain rod only do it around 6" from your ceiling so it's out of your way. Hang wet clothes on clothes hangers, than hang half on the new rod, half on your regular shower curtain rod. This is good for items that are sopping wet. As no part of our bathroom exceeds the maximum 7' rod length, we have three extras set up ... one in the tub, one above the toilet, and one in the part of the bathroom that houses just a sink.
If you have a room with a high or cathedral ceiling, I saw this trick in Amish country. Suspended 8' hardwood clothes hanger dowels (the kind in your closet) from big eyelet screws in the ceiling with rope. Drill a hole in each end, string with a sturdy rope (preferably the same color as your ceiling), screw heavy duty eye screws into your ceiling 8' apart (make sure you screw them into a wood rafter or it will just rip out), then run the rope down your ceiling to another eyelet screw, then down further to a drapery or boat hook. It takes two people to raise and lower the drying racks, although I saw one contraption that used pulleys so one person could do it (though the rope on the self-lowering contraption was less than attractive). If you paint everything the same color as your ceiling, your racks will disappear when you're not using them. These devices work great in rooms with cathedral ceilings, especially if you have a wood stove.
WalMart has retractable clotheslines that will span a 9-foot space for around $10. It's like a tape measure, only it's a nylon clothesline you can stretch across a room to a little hook on the other side to hang clothes, than retract later. You can't hang an entire load on it, but it's good to hang a few items that you might not want to have a fold-crease from a rack.