The following companies support the 0a000h party:

schokokeks.org Hosting
schokokeks.org is a webhosting company by two of the 0a000h-organizers. It's hosting the webpage and donating network equipment.

CSW Verlag
CSW is publishing various books and magazines about computer culture, retro games and the demoscene. They are donating several competition prices for the 0a000h.