As far as I know true 3D in compositing can only be found in Inferno 5, however Softimage XSI has a composite module integrated into the programme and it works in Windows and Linux. Since Softimage is true 3D I think it would be the right choice (if you have the $16K). I have also seen Lightwave doing some compositing although is very basic.
In order to deliver a personalized, responsive service and to improve the site, we remember and store information about how you use it. This is done using simple text files called cookies which sit on your computer. These cookies are completely safe and secure and will never contain any sensitive information. They are used only by fxguide or the trusted partners we work with.OK