Hi Max,
I would advice you look for some Open Source Solution. Those software much more affordable because the business model make them Free. You can find some at
SourceForge
I know an
HR software called OrangeHRM. Its a complete Open Source
HR management solutions. One of the functionalites is to set up your organizational chart ... but I'm not sure if this exactly what you need.
Any way, here is my advice for whose are looking for an affordable and complete
HR solution. Anyone can download it for free in the web-site (
Human Resource Management Software - OrangeHRM)
Hope I could help