http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html. I never know how to interpret these things exactly. May be the trends are more important than the absolute positions.
Some of my impressions:
- Fortran did not make the top 20, event though some people are still using it: http://www.intelligenceinsoftware.com/feature/expert_insight/programming_languages_fortran/. (I only use Fortran occasionally mostly when the client has some legacy code, or if I found some good old numerical routine).
- Pascal is at 12. I still use Delphi regularly, and the latest version seems to hold some promise: http://www.embarcadero.com/products/delphi.
- I am somewhat surprised at D at 20. Also Lua is higher than I would suspect.
- Many of the top 20 languages are interpreted (e.g. via some byte code) opposed to targeting bare bones machine code.