How was Prometheus made?
Tags:

The good old fashioned way, reverse engineering. The HEK helped considerably in expediting the process of figuring out tag values but everything else is hand coded except for a few sections that required libraries. We use libraries for audio playback, the user interface, and advanced scripting features (code completion, syntax highlighting, etc).

If you clicked this question thinking to yourself, "What language was Prometheus written in?", then the answer is Visual C#.

If you clicked this link wondering where the real Prometheus came from then you should check for an answer here.