Comment Delphi (Score 1) 169
The tenth most popular language is Delphi, a language that started dying in the late 90s, when its creator moved to Microsoft to invent C# (which replaced Delphi and made the partners that used to develop Delphi components change focus towards C#). And all of that despite Embarcadero (which doesn't advance Delphi that much since decades ago). Impressive.