Best PC compatibility
 

Would you please help me to find the best PC program to install on a lightweight PC to collaborate on OP?

I don't wanna buy a mac to the contractor I will work with.

He do not got the skills to hackintosh it.

Thanks

PS: price matters

OmniPlan can read and write to Microsoft Project's file format - I think that's your best option.

MP is not as easy to use as OP and far less attractive in term of interface look.

Something else?