The document discusses analyzing the top programming languages used in open source software projects. It outlines collecting data on projects from SourceForge and Ohloh across different categories, then calculating the percentage of projects using each language to determine the top 10 overall and for various categories. The results show C as the top language overall, and distributions varying between categories, with Java ranking highest in science and engineering and C++ in games. Future work could involve analyzing more data and collecting it automatically.

1. OPEN SOURCE SOFTWARE TOP
PROGRAMMING LANGUAGES
Cuong Dinh
Thao Hoang
Yathindu Hettiarachchige

2. PROGRAMMING LANGUAGES (PLS) RANKING
• Tiobe Programming Community Index
• The RedMonk Programming Language Rankings
• CodeEval Most Popular Programming Languages
1

3. OPEN SOURCE SOFTWARE (OSS)
STATISTICS
2

4. PROGRAMMING LANGUAGES IN OSS?
3

5. RESEARCH QUESTIONS
• Top 10 PLs in OSS?
• Hypothesis: Distribution of languages in every
category is the same as in the general OSS?
o Yes?
o No?
• Top 10 PLs in particular categories?
4

6. MAIN POINTS
Data Collection
Data Interpretation
Result
5

7. DATA COLLECTION PROCESS
Categories
• SourceForge
Projects
• Ohloh
Data
• Excel
6

8. CATEGORIES - SOURCEFORGE
Source: sourceforce.net
Categories Projects Data
7

9. PROJECTS - OHLOH
Source: ohloh.net
Categories Projects Data
8

10. PROJECTS - OHLOH
Source: ohloh.net
Categories Projects Data
9

11. SAMPLE DATA - EXCEL
Projects Category C C++ Java ………. Total
Apache
Open Office
Business&
Enterprise
277,310 16,057,653 1,572,319 ………. 30,713,532
aTunes Communications 0 0 89,810 ………. 102,320
Ettercap Security 42,756 458 0 ………. 49,498
FreeCAD Graphics 36,776 1,136,803 0 ………. 1,945,658
IPCorp
Firewall
System
Administration,
Security
96,276 2,963 131 ………. 268,126
Categories Projects Data
10

12. DATA INTERPRETATION
1
• Calculate the percentage of
each language
2
• Sum up the proportion of
each language
3
• Get the top 10 programming
languages
11

13. RESULT - TOP 10 PLS IN OSS
12

14. RESULT - HYPOTHESIS TESTING
Total programming language
distribution
Programming language
distribution in each category
• Chi-square test performed
• Confidence level ~ 0
• Null hypothesis is rejected
13

15. RESULT - TOP 10 PLS IN SCIENCE &
ENGINEERING
14

16. RESULT - TOP 10 PLS IN HOME &
EDUCATION
15

17. CONCLUSIONS AND FUTURE WORKS
• Conclusions
q Top 10 programming languages in OSS – C
q Top 10 programming languages in each category
q The distributions of PLs vary between different categories
Ø Science & Engineering – Java
Ø Games – C++
• Future works
q Larger Volume of Data
q Automatic Data Collection 16

18. Q & A

20. OSS

21. OSS

22. BUSINESS & ENTERPRISE

23. BUSINESS & ENTERPRISE

24. COMMUNICATIONS

25. COMMUNICATIONS

26. HOME & EDUCATION

27. HOME & EDUCATION

28. GAMES

29. GAMES

30. GRAPHICS

31. GRAPHICS

32. SCIENCE & ENGINEERING

33. SCIENCE & ENGINEERING

34. SECURITY & UTILITIES

35. SECURITY & UTILITIES

36. SYSTEM ADMINISTRATION

37. SYSTEM ADMINISTRATION