Data Sources - Where Our Metrics Come From

Data Sources - Where Our Metrics Come From

Data Source

ProgramLangCompare aggregates data from the following primary sources:

  • GitHub API: repository star counts, contributor counts, and ecosystem activity.
  • Stack Overflow Developer Survey & Data Explorer: tag popularity, developer sentiment, salary data.
  • TIOBE Index: monthly language popularity index based on search engine queries.
  • RedMonk: quarterly ranking combining GitHub and Stack Overflow data.
  • PYPL PopularitY of Programming Language: Google Trends-based popularity index.
  • Levels.fyi / Glassdoor: verified salary data across regions and seniority levels.
  • Indeed / LinkedIn Job Postings: live job market demand counts.
  • Computer Language Benchmarks Game: standardized performance benchmarks.
  • JetBrains Developer Ecosystem Survey: annual developer survey covering adoption and tooling.
  • Editorial Assessment: subjective quality scores curated by the ProgramLangCompare team.

Data is refreshed periodically; the snapshot date is shown on each language page.

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