Quote Originally Posted by cahayapemburu View Post
Define "real developer": One in which the actual developing agent is identified and quantified, for starters, and one in which there are no ingredients that do not contribute to the working properties of the developer. If this developer is only distinguished by its over the counter ingredients, I don't see the point in commercial production.
OK, Caffenol (aka Folgerol) meets all of the requirements of your definition.

I see no point in the commercial production of Caffenol.

Pyrocat-HD, Moersch Tannol, PMK,WD2D, 510-PYR0, Prescysol, DiXactol, etc. are examples of commercially available staining and tanning developers.