This list is taking in consideration the following: TIOBE Rating, this is an indicator of the popularity of programming languages. GitHub, most popular by opened pull requests. US Average Salary from Indeed. Average Salary Worldwide from StackOverflow.
JavaScript
TIOBE Rating: 7, 2.45%. GitHub: 1st.
US salary average: $110k.
Worldwide salary average: $50k.
Python
TIOBE Rating: 3, 9.7%. GitHub: 2nd.
US salary average: $116k.
Worldwide salary average: $54k.
Java
TIOBE Rating: 1, 16.8%. GitHub: 3rd.
US salary average: $102k.
Worldwide salary average: N/A.
PHP
TIOBE Rating: 8, 2.4%. GitHub: 4th.
US salary avg: $84k
Worldwide: N/A
C#
TIOBE Rating: 7, 3.5%. GitHub: 5th.
US salary avg: $90k
Worldwide salary avg: $59k
C++
TIOBE Rating: 4, 5.5%. GitHub: 6th.
US salary average: $115k.
Worldwide salary average: $51k.
Ruby
TIOBE Rating: 11, 1.06%. GitHub: 10th.
US salary average: $119k.
Worldwide salary average: $60k.
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