LED controllers
125 processors and sending cards with the two numbers that decide what they drive: pixels per port, and total capacity. Open any panel in the calculator and it works out the chains for you.
1–4 of 4 series · 11 controllers

LG
CE
Manufacturer's ownFibreLG 8K LED controller with 12 SFP+ 10G optical outputs and genlock for LSMA and LMPA MAGNIT Gen 2 Micro LED.
1 model:
Some specs unverified.

Samsung
S-Box
Manufacturer's ownFibreSamsung 8K/120Hz set-back box (SBB-SNOWAAE) for The Wall IWA/IFR/IER with 1x DisplayPort input and 8 optical outputs to the cabinets.
1 model:
Some specs unverified.

Planar
WallDirector VC
Manufacturer's own5G EthernetFibre1G EthernetPlanar WallDirector video controller with 4x HDMI 2.0 inputs and 4x RJ45 outputs driving up to four Full HD sections of DirectLight Ultra, DirectLight X LED or Clarity Matrix G3 LCD walls, with genlock.
5 models:
Some specs unverified.

LG
CV
Manufacturer's own1G EthernetLG webOS-based 4K LED controller with 16 gigabit Ethernet outputs for the GMBD, LHBB, LSBB, LSBC, LSBE, LSBF and LWBC LED series; TAA compliant.
4 models:
PortsCapacitySome specs unverified.
By brand
Brompton Technology
4 controllers · up to 36M px
Colorlight
36 controllers · up to 520M px
LG
5 controllers · up to 33.2M px
Linsn
34 controllers · up to 26M px
Megapixel VR
2 controllers · up to 35M px
NovaStar
38 controllers · up to 260M px
Planar
5 controllers · up to 18.6M px
Samsung
1 controller · up to 33.2M px
By ecosystem
A cabinet's receiving card decides which ecosystem can drive it — a NovaStar-carded panel needs a NovaStar sender, whatever the pixel maths says.
Let the calculator pick the ports
Choose a cabinet and a controller, and the wiring view splits the wall into chains that respect both the per-port and total limits.
Open the calculator