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Perl - Highly capable, feature-rich programming language with over 26 years of development
Inconsolata - OSX, Productivity, Design, Typography, powerline, and Fonts
C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation
Bitstream Vera Sans Mono - Bitstream Vera Sans Mono Font | dafont.com
Pike programming language - Dynamic programming language with a syntax similar to Java and C