Typical Application for AN32183A 9x9 Dots Matrix LED Driver IC - Datasheets.com
Building an LED Matrix Driver
Full Color RGB LED Matrix Driver Shield + RGB Matrix Screen - Wiki
Open-smart 0.8 Inch 0.8" 8 * 24 Cascadable Red Led Dot Matrix Display Module With Spi Interface For Arduino - Industrial Computer & Accessories - AliExpress
105020074 - Seeed Studio - LED Matrix Driver Board, 3.3V / 5V, I2C
8x8 8 * 8 RGB LED Matrix Module Driver Board + Full Color Rainbow V2.0 Mini Dot Matrix RGB LED Driver Shield for Arduino AVR : Amazon.ca: Industrial & Scientific
D.I.Y. 10X6 LED Matrix and MAX7219 - Project Guidance - Arduino Forum
Adafruit 16x8 LED Matrix Driver Backpack - HT16K33 Breakout : ID 1427 : $7.95 : Adafruit Industries, Unique & fun DIY electronics and kits