Table 2: Characteristics of the SourceForge sample. The table summarizes percentage of projects classified along a number of dimensions of the 38,610 projects included in the SourceForge database in May 2002. Panel A presents the distribution for the entire sample; Panel B for the subset of 9,257 observations where SourceForge has data on software contributions. Some projects may be classified into multiple categories.
Panel A: Percentage Distribution of Entire Sample
|
Development Stage
|
Environment
|
Intended Audience
|
Natural Language
|
Operating System
|
Topic
|
Planning
|
31.8
|
Console (Text)
|
30.7
|
End Users/Desktop
|
55.8
|
English
|
95.8
|
POSIX
|
57.1
|
Communications
|
16.2
|
Pre-Alpha
|
21.3
|
X11
|
29.0
|
Developers
|
64.1
|
French
|
5.7
|
Microsoft
|
28.6
|
Security
|
3.2
|
Alpha
|
18.9
|
MS Windows
|
24.1
|
System Administrators
|
24.5
|
Spanish
|
3.1
|
OS/2
|
0.2
|
Software Dvlpmt.
|
17.6
|
Beta
|
22.0
|
Other
|
13.5
|
Other
|
14.2
|
Japanese
|
1.1
|
MacOS
|
3.5
|
Desktop Environ.
|
4.5
|
Production/Stable
|
16.8
|
Internet
|
31.4
|
|
|
German
|
9.2
|
BeOS
|
0.9
|
Text Editors
|
2.8
|
Mature
|
1.8
|
No Input/Output
|
10.3
|
|
|
Russian
|
1.3
|
OS Independent
|
36.8
|
Database
|
6.9
|
|
|
Cocoa (MacOS)
|
1.0
|
|
|
|
|
Other
|
2.0
|
Education
|
3.2
|
|
|
Handhelds/PDAs
|
0.3
|
|
|
|
|
PDA Systems
|
0.1
|
Internet
|
24.0
|
|
|
|
|
|
|
|
|
|
|
Scientific/Enging.
|
8.3
|
|
|
|
|
|
|
|
|
|
|
Multimedia
|
11.5
|
|
|
|
|
|
|
|
|
|
|
Office/Business
|
5.1
|
|
|
|
|
|
|
|
|
|
|
System Tasks
|
19.8
|
|
|
|
|
|
|
|
|
|
|
Printing
|
0.5
|
|
|
|
|
|
|
|
|
|
|
Terminals
|
0.7
|
|
|
|
|
|
|
|
|
|
|
Other
|
3.1
|
|
|
|
|
|
|
|
|
|
|
Games, et al.
|
15.4
|
Panel B: Percentage Distribution of Sample with Activity Data
|
Development Stage
|
Environment
|
Intended Audience
|
Natural Language
|
Operating System
|
Topic
|
Planning
|
8.1
|
Console (Text)
|
32.7
|
End Users/Desktop
|
53.1
|
English
|
96.7
|
POSIX
|
57.9
|
Communications
|
15.3
|
Pre-Alpha
|
12.4
|
X11
|
30.2
|
Developers
|
66.5
|
French
|
5.4
|
Microsoft
|
29.8
|
Security
|
3.6
|
Alpha
|
22.0
|
MS Windows
|
25.1
|
System Administrators
|
28.5
|
Spanish
|
2.9
|
OS/2
|
0.3
|
Software Dvlpmt.
|
21.2
|
Beta
|
36.2
|
Other
|
13.1
|
Other
|
12.6
|
Japanese
|
1.2
|
MacOS
|
3.7
|
Desktop Environ.
|
5.1
|
Production/Stable
|
32.0
|
Internet
|
27.9
|
|
|
German
|
8.7
|
BeOS
|
1.0
|
Text Editors
|
3.4
|
Mature
|
3.3
|
No Input/Output
|
10.6
|
|
|
Russian
|
1.7
|
OS Independent
|
36.4
|
Database
|
7.1
|
|
|
Cocoa (MacOS)
|
1.2
|
|
|
|
|
Other
|
1.9
|
Education
|
2.7
|
|
|
Handhelds/PDAs
|
0.3
|
|
|
|
|
PDA Systems
|
0.2
|
Internet
|
24.1
|
|
|
|
|
|
|
|
|
|
|
Scientific/Enging.
|
9.5
|
|
|
|
|
|
|
|
|
|
|
Multimedia
|
14.3
|
|
|
|
|
|
|
|
|
|
|
Office/Business
|
4.6
|
|
|
|
|
|
|
|
|
|
|
System Tasks
|
20.4
|
|
|
|
|
|
|
|
|
|
|
Printing
|
0.9
|
|
|
|
|
|
|
|
|
|
|
Terminals
|
0.9
|
|
|
|
|
|
|
|
|
|
|
Other
|
2.4
|
|
|
|
|
|
|
|
|
|
|
Games, et al.
|
12.2
|
|
Intended Audience
|
|
End Users/
|
|
System
|
|
|
Desktop
|
Developers
|
Administrators
|
Other
|
Communications
|
13.3%
|
9.2%
|
13.5%
|
11.6%
|
Security
|
1.8%
|
1.9%
|
5.0%
|
2.3%
|
Software Dvlpmt.
|
4.9%
|
18.4%
|
6.8%
|
7.5%
|
Desktop Environ.
|
4.7%
|
2.5%
|
1.9%
|
2.0%
|
Text Editors
|
2.3%
|
2.3%
|
1.2%
|
1.5%
|
Database
|
4.2%
|
5.4%
|
6.2%
|
4.5%
|
Education
|
2.9%
|
1.8%
|
1.3%
|
4.8%
|
Internet
|
14.5%
|
17.3%
|
25.2%
|
18.3%
|
Scientific/Enging.
|
5.9%
|
6.3%
|
1.3%
|
10.2%
|
Multimedia
|
10.2%
|
7.5%
|
2.2%
|
6.6%
|
Office/Business
|
4.9%
|
2.9%
|
3.0%
|
4.8%
|
System Tasks
|
11.6%
|
13.0%
|
27.3%
|
11.3%
|
Printing
|
0.5%
|
0.3%
|
0.4%
|
0.3%
|
Terminals
|
0.6%
|
0.5%
|
0.8%
|
0.5%
|
Other
|
2.8%
|
1.9%
|
1.3%
|
3.5%
|
Games, et al.
|
14.7%
|
8.7%
|
2.6%
|
10.2%
| Table 3: Cross-tabulation of intended audience and project topic. The table summarizes the distribution of projects classified along two dimensions of the 38,610 projects included in the SourceForge database in May 2002. Each column indicates the percentage of projects geared to each intended audience with that particular topic.
Table 4: Tabulation of characteristics of projects with and without highly restrictive license provisions. The sample consists of 38,610 projects included in the SourceForge database in May 2002. The table summarizes percentage of projects with and without highly restrictive licensing provisions, classified along a number of dimensions. Because some projects are licensed under multiple licenses, the projects are separated as to whether all licenses are highly restrictive or not, and whether some licenses are highly restrictive or not. Some projects may be classified into multiple categories. The significance level from a χ2-test is reported in each case where the null hypothesis of no difference is rejected.
-
|
All Licenses Highly Restrictive?
|
Some Licenses Highly Restrictive?
|
|
Yes
|
No
|
Yes
|
No
|
Development Stage
|
|
|
|
|
Planning
|
32.2
|
***28.9
|
32.4
|
***28.1
|
Pre-Alpha
|
21.7
|
**20.3
|
21.8
|
***20.0
|
Alpha
|
18.6
|
***20.1
|
18.8
|
**19.8
|
Beta
|
21.8
|
***23.5
|
22.0
|
**23.3
|
Production/Stable
|
16.3
|
***18.8
|
16.5
|
***18.6
|
Mature
|
1.4
|
***2.7
|
1.5
|
***2.6
|
Environment
|
|
|
|
|
Console (Text)
|
30.3
|
***32.8
|
31.0
|
31.3
|
X11
|
31.2
|
***24.7
|
31.6
|
***22.9
|
MS Windows
|
22.7
|
***26.5
|
22.9
|
***26.5
|
Other
|
10.9
|
***19.5
|
11.4
|
***19.4
|
Internet
|
31.2
|
31.0
|
30.9
|
31.9
|
No Input/Output
|
9.5
|
12.5
|
9.8
|
12.1
|
Cocoa (MacOS)
|
0.9
|
***1.3
|
0.9
|
***1.4
|
Handhelds/PDAs
|
0.3
|
0.4
|
0.3
|
0.4
|
Intended Audience
|
|
|
|
|
End Users/Desktop
|
62.3
|
***42.0
|
62.0
|
***40.2
|
Developers
|
57.3
|
***78.5
|
58.3
|
***78.4
|
System Administrators
|
29.5
|
***23.3
|
29.6
|
***22.2
|
Other
|
14.7
|
***12.8
|
14.8
|
***12.2
|
Natural Language
|
|
|
|
|
English
|
95.4
|
***97.1
|
95.5
|
***97.2
|
French
|
6.0
|
***4.8
|
6.0
|
***4.7
|
Spanish
|
3.5
|
***2.4
|
3.4
|
***2.3
|
Japanese
|
0.8
|
***1.7
|
0.9
|
***1.6
|
German
|
10.4
|
***6.6
|
10.2
|
***6.5
|
Russian
|
1.2
|
*1.5
|
1.3
|
1.5
|
Operating System
|
|
|
|
|
POSIX
|
61.3
|
***48.9
|
61.6
|
***46.6
|
Microsoft
|
27.0
|
***31.6
|
27.2
|
***31.6
|
OS/2
|
0.2
|
0.2
|
0.2
|
0.2
|
MacOS
|
2.8
|
***5.1
|
2.9
|
***5.2
|
BeOS
|
0.7
|
***1.4
|
0.8
|
***1.4
|
OS Independent
|
33.1
|
***44.8
|
33.1
|
***46.1
|
Other
|
1.8
|
***2.5
|
1.9
|
2.2
|
PDA Systems
|
0.2
|
0.1
|
0.2
|
0.1
|
Topic
|
|
|
|
|
Communications
|
17.0
|
***14.1
|
16.9
|
***14.1
|
Security
|
3.2
|
3.1
|
3.3
|
2.9
|
Software Dvlpmt.
|
12.2
|
***29.6
|
12.8
|
***30.3
|
Desktop Environ.
|
4.9
|
***3.9
|
4.9
|
***3.7
|
Text Editors
|
2.8
|
3.0
|
2.8
|
3.0
|
Database
|
6.6
|
***7.7
|
6.6
|
***7.7
|
Education
|
3.3
|
*2.9
|
3.3
|
3.0
|
Internet
|
24.1
|
23.9
|
23.9
|
24.4
|
Scientific/Enging.
|
7.9
|
***9.3
|
8.0
|
***9.4
|
Multimedia
|
11.4
|
12.0
|
11.5
|
11.7
|
Office/Business
|
5.5
|
***4.4
|
5.5
|
***4.3
|
System Tasks
|
20.4
|
***18.6
|
20.8
|
***17.4
|
Printing
|
0.4
|
**0.7
|
0.5
|
0.6
|
Terminals
|
0.8
|
0.6
|
0.8
|
**0.5
|
Other
|
3.1
|
3.2
|
3.0
|
3.3
|
Games, et al.
|
16.6
|
***12.3
|
16.5
|
***12.1
|
Definitions:
* = Significant at the 10% confidence level.
** = Significant at the 5% confidence level.
*** = Significant at the 1% confidence level.
|