Internet
Connecting a C64 to WiFi | Nostalgia Nerd
https://youtube.com/watch?v=fX3k6EZsZCM

Chat over IRC on your C64 with EasyFlash3 IRC 
https://youtube.com/watch?v=6YoiNVHZM7s

EasyFlash 3 cart: http://store.go4retro.com/easyflash-3/ 
ef3irc:  http://csdb.dk/release/?id=160696

Internet + C64, SuperCPU128 16 MB, Jiffydos, RR Net MK3, 1351
https://youtube.com/watch?v=WXQ-M3NMrgg

LUnix OS | Unix-Like OS for Commodore 64 
https://youtube.com/watch?v=cB91D5FGb_0

How to get Contiki online with RR-Net MK3 
https://youtube.com/watch?v=9Bg2qWQADb8

Accessing internet with Commodore 64 and Amiga 1200 in 2017
https://youtube.com/watch?v=rk4L0WeUvvQ