Sorry, S., I've never heard of one. But I've heard of lots of kids who learn to climb out. So, other options ?
One would be to put some padding on the floor, so she won't get hurt if she tumbles down. Another might be to put something she can climb 'onto' next to the crib, so it's easier to climb down (I don't have a clue how these little ones do that part of the trick) onto the floor.
And then . . . .my favorite: accept the inevitable and put her in a twin bed. I know I don't have to caution you abut falling out -- We moved our (now 15 yr old) daughter into a twin bed, which was actually the top bunk of "crate furniture". We thought this was great, because both sides had 2x4's for rails that were screwed right into the frame. She would certainly NOT fall out. And she never did -- but one time when we went to bed, she was crying. I went in and immediately called my husband. She'd fallen through the space between the rail and the mattress, and was stuck by her chin. I couldn't pull her out. So I held her and he pushed down on the mattress so we could pull/push her back to safety. We then put pillows against the rail.
In retrospect, I would put a twin bed against the wall on one side, and perhaps push a dresser or something against it on the other -- Then stuff pillows or something between the two so it would be REALLY HARD to fall between.
We have another twin bed in our house that has a "trundle bed" under it. The trundle is a mattress on a metal frame that rolls out from under, than raises up and locks into place at bed height. If you had a trundle bed, she could either sleep in that, near the floor so she wouldn't fall more than 6 inches when she rolled out, or you could put her to bed and pull out the trundle so she'd roll onto a mattress when falling out of bed. Or, you can do the same thing by putting the crib mattress on the floor by her bed.
Your daughter is ready, able and willing to get out of bed whenever she wants to, anyway, so I suspect the crib is on it's way out. (I think Becca moved to the twin bed at about 18 months, cuz we were preparing to use the crib for her younger sister who was born when she was 20 mos old.)
Good luck ! You have a mountain climber, a tall ship sailor, or a gymnast on your hands !! :-)