This is a list of most active GitHub users in Japan over the past year. Other countries/cities can be found here.
This list was generated at
This list is generated with this piece of code. The logic is as follows (in pseudocode):
githubUsers.sort(_.followers) .filter(_.location == 'Japan') .take(1000) .sort(_.contributions) .take(256)
This list contains all public contributions for each user. There are total users in the region and you need at least followers to be on this list.