developer

noun

1. A person or entity engaged in the creation or improvement of certain classes of products.
2. A real estate developer; a person or company who prepares a parcel of land for sale, or creates structures on that land.

   “Across Japan, technology companies and private investors are racing to install devices that until recently they had little interest in: solar panels. Massive solar parks are popping up as part of a rapid build-up that one developer likened to an "explosion."”

   “[Donald Trump] would repeat this point three more times over the course of several hours, as if pleading with his counterparties to see fiscal reason. (Religious fanatics, alas, do not always respond to the same incentives as New York developers.)”

3. A film developer; a person who uses chemicals to create photographs from photograph negatives.
4. A liquid used in the chemical processing of traditional photos.
5. A reagent used to produce an ingrain color by its action upon some substance on the fiber.
6. A software developer; a person or company who creates or modifies computer software.