The choice of programming language can greatly influence the roles, projects, and general opportunities that a developer has. Languages are a classic subject of debate and the kernels of some of the strongest developer communities. Languages and their communities matter to tool makers, too, though, as they want to ensure they provide the most useful SDKs. This report identified the current population of the major language communities, and examines the changes and trends over the last few years.

Key questions answered:

• How many developers are using the major languages?
• Which are the most popular languages?
• Which languages have seen the largest and smallest growth in the last few years?
• Which languages are more common among high and low earners?