NEC

Duo Planet Italy :

- Italian website for Duo gamers worldwide. Games exchange, guestbook, and Duo links.
Jadeite's Turbo Grafx-16 Page :

- Dedicated to the Turbo Grafx-16, Turbo Duo.
PC Engine DE :

- Information, tips, games, hardware, and software.
PC Enginefx.com :

- Information and images of the NEC PC-FX covering the PC Engine, Playdia, Dreamcast, J-POP, and NeoGeo Pocket.
Turbo Grafx Addict :

- Provides cover scans of both Japanese and United States release games.