Every year GitHub release their State of the Octoverse report containing a huge number of insights drawn from datamining the massive number of public and private repositories on GitHub. One of the most interesting parts of the report is always the most popular programming languages. This year, the 10 most popular programming languages on GitHub are:
The list was created using the following criteria:
Top 10 primary languages over time, ranked by number of unique contributors to public and private repositories tagged with the appropriate primary language.
Every year Stack Overflow have a similar report, drawn instead from a developer survey. The language popularity reports are remarkably consistent between the two 2019 reports.
You can learn more about the reports watching the video below.