Isn't Angular a Google project? Shouldn't at least some of those commits be counted as some of Google's?
Isn't it funny how Github, the supposed "leader of open source" and basically owner of the open source hosting/community, is nowhere near that list? Would love to have the source to the tool they used to get the data, and try it on github.com/github.
If you want to get technically Atom is their largest open source project, its just happens to be under its own organization name. Plus there are quite a few people who don't work at Github that contribute to it. The same can be said about Google and Angular.
Probably more to do with company size.
Indeed it is. Microsoft: 118000 employees, Github: 603 employees. I don't understand why everyone expects Github to push more open source projects? They are still fairly small company.