Python
Description
Python can be used not only for web development but also in many different fields: Artificial Intelligence, Deep Learning, and the Internet of Things. Like PHP it runs server-side and can be used to pre-process files. For us it's most likely interesting because it's the language Processing and DrawBot is written in.
Example
x = 5
y = "John"
print(x)
print(y)
Outputs
5
John