Online Project Management programs are efficient, affordable, scalable.
- Basecamp (1-20 employees)
- Copper Project (10-20)
- Workamajig (30+)
Use what feels right to you. Consider schooling yourself on Excel and especially Microsoft Project. There are many Mac-based programs that behave like Project but none really pull it off. It is worth having a Parallels / Windows install on your Mac for Project and Visio alone.