El jefe,
I'm currently using SDT's Airops and Aircrews- not bad and it is designed to be a complete system, including slot management, flight scheduling, crew rostering etc- Have to say it's expensive and it is shortly to be replaced by a very much updated system, but it was simple and easy to use, with lots of good features. It's not a PC based system.
BAL are currently using the old system, but ANZ are heavily involved in development and it's popular in the far east. SDT are flexible about modifications and specific enhancements.
Have had some experience of ROC- wasn't impressed, AIMS is OK.