Does your shop currently use a job control software (JobBOSS, E2, M1, Epicor, ShopKeeper)? Most of these have a quality module that ties quality documentation and production control together. Our shop uses JobBOSS and it works well for us. A little research on your part will tell you which one will work best for your shop. As far as stand alone quality document control software I would suggest Unipoint or something similar.
Our company is currently ISO9001 registered and we are planning on upgrading to AS9100. We have JobBoss as well here, and it works well for production control. Unipoint is the JobBoss quality module, and is not a stand alone solution. We are using both here. It is heavy on cost of quality related data for time tracking and feeding this time info back into JobBoss. Time tracking is weighted heavily. It does not do defect analysis well, IMHO, and is rather cumbersome to use, at best. The calibration portion(not a separate module?) is very hard to use, and lumps together maintenance equipment, tools and calibrated equipment. I had been looking forward to using the JobBoss Quality module, but was fairly disappointed.
Once again - there is no magic software pill to take for Quality.

-My opinion as a long time Quality professional and Quality Manager.