stackoverflow: 2902
math: 803
ru.stackoverflow: 556
physics: 423
askubuntu: 355
superuser: 279
electronics: 258
es.stackoverflow: 234
stats: 205
unix: 199
blender: 193
tex: 163
mathoverflow.net: 133
gis: 131
pt.stackoverflow: 130
mathematica: 124
ell: 120
serverfault: 120
english: 118
scifi: 116
apple: 114
ethereum: 97
salesforce: 90
worldbuilding: 90
diy: 90
dba: 77
codereview: 72
android: 71
wordpress: 64
chemistry: 60
gaming: 57
hermeneutics: 54
codegolf: 53
graphicdesign: 52
puzzling: 51
datascience: 49