recruitment software

based on your requirements you would be best suited to an online package. Whilst open source is appealing because it is free, there may be issues around support and hosting and of course security. UK company e Boss recruitment software offer these technologies in a stack supported and updated by a full time team.
recruitment software

I think you should try free recruitment software www.hiringtracker.com the best recruitment software for keeping track of your recruitment team and real time interaction with your client , Employer and consultant both can intact on real time.
Recruitment Software