Hans de Ruiter is best known for his contributions to write software support for Radeon cards. Thanks to him we have an opportunity to use modern graphics cards in AmigaOne systems. A-EON Technology acquired exclusive ownership of the RadeonHD source and binary code for AmigaOS 4.x last summer 2016. The agreement with developer Hans de Ruiter transferred all existing and future RadeonHD intellectual property rights to A-EON Technology. Hans de Ruiter is still involved and just started a poll to find out witch is the most used graphics card by Amiga users, you can find the poll by clicking this link.