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A Study of Language Usage Evolution in Open Source Software

A Study of Language Usage Evolution in Open Source Software. Siim Karus University of Tartu , Estonia University of Zurich , Switzerland siim.karus@ut.ee. Harald Gall University of Zurich Switzerland gall @ ifi.uzh.ch. OSS Languages. Total. 2010. 25%. XML 21%. 20%. HTML 16%. 15%.

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A Study of Language Usage Evolution in Open Source Software

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  1. A Study of Language Usage Evolution in Open Source Software Siim Karus University of Tartu, Estonia UniversityofZurich, Switzerland siim.karus@ut.ee Harald Gall UniversityofZurich Switzerland gall@ifi.uzh.ch

  2. OSS Languages Total 2010 25% XML 21% 20% HTML 16% 15% 14% XML 11% HTML Java 10% 10% Shell scripts, C 8% 7% Java , C , C++ C++ 6% 5% 5% Shell scripts Data from http://www.ohloh.net

  3. OSS Code Churn Churn in 2010 25% XML 20% 20% Java 15% 15% C++ 13% C 11% 10% HTML 8% 5% Shell scripts 1% Data from http://www.ohloh.net

  4. Aims

  5. Dataset • 22 OSS projectrevisions • 2 types: business, desktop • 12 years • 45 artefacttypes

  6. ActiveLanguages

  7. Most Popular Languages

  8. DeveloperExperience

  9. File Types in First Commit

  10. Co-evolution Patterns (Developers)

  11. Co-evolution Patterns(Commits)

  12. Summary

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