YGOPRODeck is affiliated with the following:
1. AntiMetaman for his HQ card project that the site uses. Information, download links and relevant credits can be found on his project page here.
3. Cardmarket.eu for the Card Market Banner affiliation located on the header of the site.
4. Duelists Unite. This is a group primarily for online tournaments for Yu-G-Oh and discussion of other online trading card games. The website can be found here and their very active discord server can be found here.