Eight Legacy Programming Languages Still Dominate Modern Software Development Despite Newer Alternatives

Dec 25, 2025
InfoWorld
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Summary

Eight legacy programming languages including COBOL, Perl, Ada, Fortran, C/C++, Visual Basic, Pascal, and Python continue dominating modern software development as major corporations avoid rewriting critical systems that could introduce costly bugs, with these languages powering everything from banking operations to defense systems.

Key Points

  • Eight older programming languages including COBOL, Perl, Ada, Fortran, C/C++, Visual Basic, Pascal, and Python continue to dominate modern software development despite newer alternatives
  • These legacy languages persist because rewriting old code often introduces more bugs than it fixes, and many have been updated with modern features like object-oriented programming
  • Major corporations and industries rely on these languages for critical systems, with COBOL powering banking operations, Fortran handling scientific computations, and Ada controlling defense systems

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