Adafruit RGB Matrix HAT + RTC for Raspberry PI - Boutique Semageek
Grove - RGB LED Matrix w/Driver - Seeed Wiki
32x32 RGB LED Matrix Panel - 6mm pitch
Adafruit RGB Matrix Bonnet for Raspberry Pi – Vilros.com
Amazon.com: RGB Full Color LED Matrix Panel 64x64 Pixels, 4096 Individual RGB LEDs,Adjustable Brightness,3mm Pitch, Displaying Text Colorful Image Animation Chainable Design Compatible with Arduino/Raspberry Pi : Electronics
64x32 RGB LED Matrix - 5mm pitch : ID 2277 : $49.95 : Adafruit Industries, Unique & fun DIY electronics and kits
P3 Rgb Pixel Panel Hd Display 64x32 Dot Matrix Smd2121 Led Module Indoor Screen Full Color Video Wall 192x96mm Message Board - Led Displays - AliExpress
LED 8x8 Matrix RGB Display
Red-Green-Blue 8x8 CC Led Matrix Display Technical Data