A.,
I don't have the greatest advice for alternatives to the cry it out strategy. Just support. I definetely know what you are going through. We used it with my now 10 month old with some reasonable success. At first I would cry when he was crying..... I found that the best way to get through it was to distract myself with other things (shower, cook, have a drink on the patio with my husband). Or leave the house, leaving someone with more resilience to the crying with him and go to the gym, get a cup of coffee, etc. Sitting near where he is crying just makes 10 minutes seem like 10 hours.
The other thing is to offer some encouragement.....you are teaching your little one a very valuable skill, and they will be better off when they can sleep unassisted. I promise it gets better, but don't be surprised if it takes more than the often advertised 3-4 days. It took mine about 3-4 weeks until he would routinely fall asleep by himself without crying. It WILL end, I promise. Also remember that it you cave in to his crying now and try again when he is older, it will only be harder and he will cry longer and harder.
This may not have been the most helpful response, but know that there are others that have gone through it...!