The Intamsys Funmat line of Industrial 3D Printers are based on standard Reprap/Marlin/Sprinter firmware, and are therefore compatible with an array of 3D Gcode slicing software.
Simplify3D continues to prove itself as one of the best slicer engines on the market -- as one of the few premium (paid) slicers, it has certain features that make it better for many parts, whether that be the multi-process capabilities, or simply the way it decides to make the toolpath for different geometry, we love, and generally opt for using S3D.
Cura has come quite far since the early days, now rivaling S3D for the crown of 3D slicers. With many experimental features, along with massive support from the community, Cura is a world-class slicer, and best of all, it's completely free. Cura is a great option when you're a bit more advanced with your prints.
INTAMSUITE is the slicing software released by Intamsys for the Funmat line of printers. Based on Cura 1.6, it comes with preset profiles for PEEK, PEI, PPSU and other high-temp materials, set up for the Funmat 3D Printers. It's a great way to get started, but you'll want to copy profiles and upgrade to Cura or S3D for advanced prints.