Any good substitute for Festool aluminum extrusions?

I'm designing a workbench and trying to find some aluminum 80/20 with a profile similar to the one used in [Festool's Multifunction Table MFT/3](https://www.festoolusa.com/products/semi-stationary-work/multifunction-table/495315---mft3). I really am only looking for something strong, flat, and wide that Festool or Makita clamps can slide into. I don't need the top V-shaped profile specific for Festool accessories. Is there a good solution out there that you've used that works with Festool or Makita clamps?