Country rankings

Top GitHub contributors in Japan.

Movement compares each contributor’s current rank with their previous OSSRank measurement when a prior snapshot exists. Click the column buttons to sort by public PRs, repos, or followers instead.

20 contributors40807 candidates checkedWeekly refreshLatest 2026-08-07

Rank	Movement	Username					Location	Discovery
#1	→	mizchi Kotaro Chikuba	16,219	2,317	658	1,838	Tokyo/Japanmulti-location	location:Japan repos:>5 type:user
#2	→	tokuhirom Tokuhiro Matsuno	13,542	7,430	991	1,037	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#3	→	syoyo Syoyo Fujita	9,571	35	300	1,002	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#4	→	unhappychoice Yuji Ueki	9,027	793	65	3,657	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#5	→	tekezo Takayama Fumihiko	8,564	63	39	1,070	Japanexact-country	location:Japan repos:>5 type:user
#6	→	manman4 manman4	8,162	36	38	4,961	Japanexact-country	location:Japan repos:>5 type:user
#7	→	hsbt Hiroshi SHIBATA	6,643	1,017	328	1,651	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#8	→	matz Yukihiro "Matz" Matsumoto	6,605	24	19	10,646	Matsue, Japanmulti-location	location:Japan repos:>5 type:user
#9	→	ko1 Koichi Sasada	6,580	118	119	1,216	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#10	→	azu azu	5,331	532	1,550	2,849	Tokyo/Japanmulti-location	location:Japan repos:>5 type:user
#11	→	mumoshu Yusuke Kuoka	5,266	188	338	1,247	Kagawa, Japanmulti-location	location:Japan repos:>5 type:user
#12	→	mattn mattn	4,835	1,045	2,286	13,494	Osaka, Japanmulti-location	location:Japan repos:>5 type:user
#13	→	PINTO0309 Katsuya Hyodo	4,654	230	459	2,224	Nagoya, Japanmulti-location	location:Japan repos:>5 type:user
#14	→	amatsuda Akira Matsuda	3,710	335	249	2,971	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#15	→	sapphi-red 翠	3,298	1,579	243	1,489	Japanexact-country	location:Japan repos:>5 type:user
#16	→	gfx FUJI Goro	2,942	1,871	504	1,030	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#17	→	kazupon kazuya kawaguchi	2,722	460	374	4,337	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user
#18	→	keijiro Keijiro Takahashi	2,634	7	946	23,793	Japanexact-country	location:Japan repos:>5 type:user
#19	→	Jannchie Jianqi Pan	2,433	22	247	1,909	Japan, Tokyo ⇄ China, Shanghaimulti-location	location:Japan repos:>5 type:user
#20	→	hajimehoshi Hajime Hoshi	2,371	42	182	2,481	Tokyo, Japanmulti-location	location:Japan repos:>5 type:user

Commit and PR counts are one-year public contribution totals from the official GitHub GraphQL API. When a contributor has an isolated per-user burst that exceeds their adaptive baseline cap, the table ranks on the adjusted commit signal while showing the raw total for audit. Repo and follower counts come from public GitHub profile metadata. Country matching uses free-text GitHub profile location and is not verified geography.

Discovery queries

location:Japan repos:>5 type:user — 100 accepted from 40,807 GitHub matches

Raw JSON snapshot · Methodology