Final count of registered Psychtoolbox-3 installations at May 20 2018 23:08:23.

Total number of downloads + updates : 261010

Not counted downloads due to invalid id : 8488
Not counted in total due to invalid id : 24887
Total number of unique installations : 96673
Number of PTB's updated at least once : 27229

Breakdown of installations by Psychtoolbox flavor:

'beta'/'current' : 86302
'unsupported' aka 'stable' : 683
'trunk' : 36
Psychtoolbox-3.0.7 : 0
Psychtoolbox-3.0.8-PreTiger : 5
Psychtoolbox-3.0.8 : 26
Psychtoolbox-3.0.9 : 17
Psychtoolbox-3.0.10 : 84
Psychtoolbox-3.0.11-PreWinGst : 1
Psychtoolbox-3.0.11 : 2237
Psychtoolbox-3.0.12 : 97
Psychtoolbox-3.0.13 : 72
Unclassified : 7105

Estimated breakdown by host operating system (*):

MacOS-X all : 28559 ( 29.542%)
Windows all : 65527 ( 67.782%)
Linux all : 2589 ( 2.678%)
Linux on ARM embedded/mobile : 10
Linux 64 Bit Matlab/Octave : 1691 ( 65.315% of all Linux systems)
Windows 64 Bit Matlab/Octave : 35868 ( 54.738% of all Windows systems)
MacOS-X 64 Bit Matlab/Octave : 19906 ( 69.701% of all MacOS-X systems)

(*) Strong underestimate for Linux, overestimate for Windows and OSX!


For Macintosh - Breakdown by system architecture:

PowerMac : 1446 ( 5.063% of all Apple systems)
IntelMac : 27113

For Macintosh - Breakdown by OS/X version:

10.3 - Panther : 156
10.4 - Tiger : 1864
10.5 - Leopard : 3010
10.6 - Snow Leopard : 3958
10.7 - Lion : 1942
10.8 - Mountain Lion : 2207
10.9 - Mavericks : 3128
10.10 - Yosemite : 3895
10.11 - El Capitan : 3670
10.12 - Sierra : 3524
10.13 - High Sierra : 1185

For MS-Windows - Breakdown by Windows version:

Windows additional preVistas : 1116
Windows 2000 : 145
Windows XP : 14174
Windows Vista : 2661
Windows 7 : 31109
Windows 8 : 6017
Windows 8.1 : 154
Windows 10 : 10149

For MS-Windows - Breakdown by Matlab release:

Matlab R2007a (V7.4) or later: 59965
Previous Matlab releases : 5176

Breakdown for all systems by Matlab major versions:

Matlab 5.x : 1
Matlab 6.x : 524
Matlab 7.x : 42732
Matlab 7.0 (R2005a) : 2172
Matlab 7.1 (R2005b) : 1320
Matlab 7.2 (R2006a) : 875
Matlab 7.3 (R2006b) : 1133
Matlab 7.4 (R2007a) : 3110
Matlab 7.5 (R2007b) : 4245
Matlab 7.6 (R2008a) : 2795
Matlab 7.7 (R2008b) : 2117
Matlab 7.8 (R2009a) : 3199
Matlab 7.9 (R2009b) : 3366
Matlab 7.10 (R2010a) : 5941
Matlab 7.11 (R2010b) : 2522
Matlab 7.12 (R2011a) : 2801
Matlab 7.13 (R2011b) : 2499
Matlab 7.14 (R2012a) : 4637
Matlab 8.0 (R2012b) : 4269
Matlab 8.1 (R2013a) : 5632
Matlab 8.2 (R2013b) : 3102
Matlab 8.3 (R2014a) : 5616
Matlab 8.4 (R2014b) : 4618
Matlab 8.5 (R2015a) : 5411
Matlab 8.6 (R2015b) : 5212
Matlab 9.0 (R2016a) : 4904
Matlab 9.1 (R2016b) : 4835
Matlab 9.2 (R2017a) : 4699
Matlab 9.3 (R2017b) : 3317
Matlab 9.4 (R2018a) : 357

Number of GNU/Octave V3+ installations by system:

Octave on OS/X : 648 ( 2.269% of all OS/X installs)
Octave on Linux : 411 ( 15.875% of all Linux installs)
Octave all on Windows : 386 ( 0.589% of all Windows installs)
Octave 4 on Windows : 223 ( 0.340% of all Windows installs)

Parsed lines in registration log        : 262439
Invalid (skipped) log entries : 0