committers.top

A list of the most active GitHub users

Most active GitHub users in Japan

This is a list of most active GitHub users in Japan over the past year. Other countries/regions can be found here. This list was generated at 2026-09-22 10:37:03 +0000 and machine-readable JSON is available for:

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 commits for each user. There are 142436 total users in the region and you need at least 197 followers to be on this list.

Badges are also available, which you can include on your profile pages. Simply include the following markdown for users: 

[![committers.top badge](https://user-badge.committers.top/japan/USERNAME.svg)](https://user-badge.committers.top/japan/USERNAME)
For organizations, you need to use a slightly different markup: 
[![committers.top badge](https://org-badge.committers.top/japan/ORGNAME.svg)](https://org-badge.committers.top/japan/ORGNAME)
In case you aren't currently ranked on this page, you'll simply receive an "unranked" badge.

Rank User Contribs Picture
1. MagicalTux
(Mark Karpelès)		 39609 Avatar for MagicalTux
2. refirst11
()		 35448 Avatar for refirst11
3. rsasaki0109
(Ryohei Sasaki)		 26426 Avatar for rsasaki0109
4. mizchi
(Kotaro Chikuba)		 19494 Avatar for mizchi
5. tokuhirom
(Tokuhiro Matsuno)		 18675 Avatar for tokuhirom
6. yuiseki
(yuiseki)		 17035 Avatar for yuiseki
7. j5ik2o
(Junichi Kato)		 14601 Avatar for j5ik2o
8. syoyo
(Syoyo Fujita)		 14582 Avatar for syoyo
9. lhl
(Leonard)		 12813 Avatar for lhl
10. fumiya-kume
(kuu(Fumiya Kume))		 10931 Avatar for fumiya-kume
11. zonuexe
(USAMI Kenta)		 10728 Avatar for zonuexe
12. ubugeeei
(ubugeeei)		 10691 Avatar for ubugeeei
13. kurone-kito
(Kuroné Kito (黒音キト))		 10677 Avatar for kurone-kito
14. sile
(Takeru Ohta)		 9927 Avatar for sile
15. yanorei32
(Ray Yano | あねてあ)		 9472 Avatar for yanorei32
16. shogo82148
(ICHINOSE Shogo)		 9330 Avatar for shogo82148
17. unhappychoice
(Yuji Ueki)		 9086 Avatar for unhappychoice
18. tekezo
(Takayama Fumihiko)		 8860 Avatar for tekezo
19. houko
(Evan)		 8857 Avatar for houko
20. matz
(Yukihiro "Matz" Matsumoto)		 8754 Avatar for matz
21. bannzai
(bannzai)		 8716 Avatar for bannzai
22. miyako
(Keisuke Miyako)		 8510 Avatar for miyako
23. 1amageek
(1amageek)		 8441 Avatar for 1amageek
24. kawasima
(Yoshitaka Kawashima)		 8169 Avatar for kawasima
25. ko1
(Koichi Sasada)		 7982 Avatar for ko1
26. lestrrat
(lestrrat)		 7748 Avatar for lestrrat
27. hsbt
(Hiroshi SHIBATA)		 7681 Avatar for hsbt
28. mizzy
(Gosuke Miyashita)		 7609 Avatar for mizzy
29. koriym
(Akihito Koriyama)		 7543 Avatar for koriym
30. manman4
(manman4)		 7307 Avatar for manman4
31. ryota-murakami
(Ryota Murakami)		 7232 Avatar for ryota-murakami
32. taiki-e
(Taiki Endo)		 6873 Avatar for taiki-e
33. YumNumm
(Ryotaro Onoue)		 6591 Avatar for YumNumm
34. zero-0002
(Zero Dev)		 6476 Avatar for zero-0002
35. sksat
(sksat)		 6368 Avatar for sksat
36. sue445
(Go Sueyoshi)		 6346 Avatar for sue445
37. k1LoW
(Ken’ichiro Oyama)		 6227 Avatar for k1LoW
38. making
(Toshiaki Maki)		 6211 Avatar for making
39. hakatashi
(Koki Takahashi)		 6125 Avatar for hakatashi
40. guitarrapc
(Ikiru Yoshizaki)		 6050 Avatar for guitarrapc
41. mattn
(mattn)		 6017 Avatar for mattn
42. EdamAme-x
(EdamAmex)		 5878 Avatar for EdamAme-x
43. yuki-kimoto
(Yuki Kimoto)		 5786 Avatar for yuki-kimoto
44. mumoshu
(Yusuke Kuoka)		 5745 Avatar for mumoshu
45. takahashim
(Masayoshi Takahashi)		 5693 Avatar for takahashim
46. takumi-sato0209
(Takumi Sato)		 5607 Avatar for takumi-sato0209
47. kmizu
(Kota Mizushima)		 5604 Avatar for kmizu
48. wajahat-ali-mir-dev
(Wajahat Ali Mir)		 5546 Avatar for wajahat-ali-mir-dev
49. winebarrel
(Genki Sugawara)		 5528 Avatar for winebarrel
50. zchee
(Koichi Shiraishi)		 5527 Avatar for zchee
51. ursm
(Keita Urashima)		 5191 Avatar for ursm
52. xuwei-k
(kenji yoshida)		 5143 Avatar for xuwei-k
53. 2bbb
(2bit)		 4944 Avatar for 2bbb
54. azu
(azu)		 4935 Avatar for azu
55. wkentaro
(Kentaro Wada)		 4822 Avatar for wkentaro
56. take-cheeze
(Takeshi Watanabe)		 4744 Avatar for take-cheeze
57. PINTO0309
(Katsuya Hyodo)		 4586 Avatar for PINTO0309
58. akiomik
(Akiomi KAMAKURA)		 4402 Avatar for akiomik
59. dalance
(Naoya Hatta)		 4374 Avatar for dalance
60. SebastienGllmt
(Sebastien Guillemot)		 4264 Avatar for SebastienGllmt
61. gfx
(FUJI Goro)		 4210 Avatar for gfx
62. sxzz
(Kevin Deng)		 4161 Avatar for sxzz
63. himkt
(himkt)		 4017 Avatar for himkt
64. tk0miya
(Takeshi KOMIYA)		 4014 Avatar for tk0miya
65. halogenandtoast
(Matthew Mongeau)		 3988 Avatar for halogenandtoast
66. bee-san
(Autumn (Bee))		 3964 Avatar for bee-san
67. europanite
(europanite)		 3957 Avatar for europanite
68. toastkidjp
(Toast kid)		 3687 Avatar for toastkidjp
69. amatsuda
(Akira Matsuda)		 3684 Avatar for amatsuda
70. yamadashy
(Kazuki Yamada)		 3625 Avatar for yamadashy
71. john-rocky
(Daisuke Majima (MLBoy))		 3601 Avatar for john-rocky
72. kazupon
(kazuya kawaguchi)		 3548 Avatar for kazupon
73. fujiwara
(FUJIWARA Shunichiro)		 3547 Avatar for fujiwara
74. mashharuki
(Haruki Kondo)		 3540 Avatar for mashharuki
75. tmori
(Takashi Mori)		 3513 Avatar for tmori
76. yug1224
(Yuji Yamaguchi)		 3366 Avatar for yug1224
77. ianlewis
(Ian Lewis)		 3364 Avatar for ianlewis
78. harupy
(Harutaka Kawamura)		 3350 Avatar for harupy
79. sotarok
(Sotaro Karasawa)		 3349 Avatar for sotarok
80. komagata
(Masaki Komagata)		 3263 Avatar for komagata
81. tkoyama010
(Tetsuo Koyama)		 3250 Avatar for tkoyama010
82. sevenc-nanashi
(Nanashi.)		 3182 Avatar for sevenc-nanashi
83. shimbaco
(Shimba, Koji)		 3152 Avatar for shimbaco
84. hakuturu583
(Masaya Kataoka)		 3111 Avatar for hakuturu583
85. yasulab
(Yohei Yasukawa)		 3087 Avatar for yasulab
86. suzuki-shunsuke
(Shunsuke Suzuki)		 3035 Avatar for suzuki-shunsuke
87. lambdalisue
(Λlisue)		 3012 Avatar for lambdalisue
88. Jannchie
(Jianqi Pan)		 2996 Avatar for Jannchie
89. sapphi-red
(翠)		 2941 Avatar for sapphi-red
90. rigaya
(rigaya)		 2870 Avatar for rigaya
91. bobbens
(Edgar Simo-Serra)		 2865 Avatar for bobbens
92. hajimehoshi
(Hajime Hoshi)		 2819 Avatar for hajimehoshi
93. 1024jp
(1024jp)		 2810 Avatar for 1024jp
94. skanehira
(skanehira)		 2781 Avatar for skanehira
95. tokoik
(Kohe Tokoi)		 2692 Avatar for tokoik
96. ksoichiro
(Soichiro Kashima)		 2692 Avatar for ksoichiro
97. walf443
(Keiji, Yoshimi)		 2683 Avatar for walf443
98. keijiro
(Keijiro Takahashi)		 2637 Avatar for keijiro
99. kitao
(Takashi Kitao)		 2633 Avatar for kitao
100. shibukawa
(Yoshiki Shibukawa)		 2578 Avatar for shibukawa
101. atsushieno
(Atsushi Eno)		 2541 Avatar for atsushieno
102. aviatesk
(Shuhei Kadowaki)		 2526 Avatar for aviatesk
103. zapabob
(峯岸 亮)		 2526 Avatar for zapabob
104. sigma7863
(Sigma)		 2506 Avatar for sigma7863
105. ykzts
(Yamagishi Kazutoshi)		 2463 Avatar for ykzts
106. Saqoosha
(Saqoosha)		 2455 Avatar for Saqoosha
107. terasakisatoshi
(Satoshi Terasaki)		 2388 Avatar for terasakisatoshi
108. hi-ogawa
(Hiroshi Ogawa)		 2372 Avatar for hi-ogawa
109. nateberkopec
(Nate Berkopec)		 2367 Avatar for nateberkopec
110. znz
(Kazuhiro NISHIYAMA)		 2353 Avatar for znz
111. enliven17
(cankat)		 2332 Avatar for enliven17
112. t3tra-dev
(t3tra)		 2317 Avatar for t3tra-dev
113. onevcat
(Wei Wang)		 2302 Avatar for onevcat
114. SethRobinson
(Seth Robinson)		 2297 Avatar for SethRobinson
115. AdingApkgg
(Asuna)		 2272 Avatar for AdingApkgg
116. kishikawakatsumi
(Kishikawa Katsumi)		 2242 Avatar for kishikawakatsumi
117. cocoa-xu
(Cocoa)		 2235 Avatar for cocoa-xu
118. mpyw
(mpyw)		 2226 Avatar for mpyw
119. tatsuhiro-t
(Tatsuhiro Tsujikawa)		 2215 Avatar for tatsuhiro-t
120. koron
(MURAOKA Taro)		 2210 Avatar for koron
121. rui314
(Rui Ueyama)		 2201 Avatar for rui314
122. gkjohnson
(Garrett Johnson)		 2196 Avatar for gkjohnson
123. AkihiroSuda
(Akihiro Suda)		 2174 Avatar for AkihiroSuda
124. anatawa12
(anatawa12)		 2133 Avatar for anatawa12
125. takano32
(TAKANO Mitsuhiro)		 2127 Avatar for takano32
126. Hiroshiba
(Hiroshiba)		 2105 Avatar for Hiroshiba
127. koxudaxi
(Koudai Aono)		 2057 Avatar for koxudaxi
128. atztogo
(Atsushi Togo)		 2027 Avatar for atztogo
129. kexi
(Kei Nakayama)		 2000 Avatar for kexi
130. konn
(Hiromi Ishii)		 1994 Avatar for konn
131. vrtmrz
(vorotamoroz)		 1993 Avatar for vrtmrz
132. iebb
(ieb)		 1984 Avatar for iebb
133. masuidrive
(Yuichiro MASUI)		 1971 Avatar for masuidrive
134. Songmu
(Masayuki Matsuki)		 1971 Avatar for Songmu
135. tyoshikawa1106
(Taiki Yoshikawa)		 1967 Avatar for tyoshikawa1106
136. JohnTitor
(Yuki Okushi)		 1962 Avatar for JohnTitor
137. bmf-san
(Kenta Takeuchi)		 1906 Avatar for bmf-san
138. ryotarai
(Ryota Arai)		 1868 Avatar for ryotarai
139. cpojer
(Christoph Nakazawa)		 1867 Avatar for cpojer
140. kazunori279
(Kaz Sato)		 1863 Avatar for kazunori279
141. nwtgck
(Ryo Ota)		 1822 Avatar for nwtgck
142. RobertTLange
(Robert Tjarko Lange)		 1804 Avatar for RobertTLange
143. eitsupi
()		 1803 Avatar for eitsupi
144. koic
(Koichi ITO)		 1778 Avatar for koic
145. yutkat
(Yuta Katayama)		 1777 Avatar for yutkat
146. whitphx
(Yuichiro Tachibana (Tsuchiya))		 1737 Avatar for whitphx
147. jsakamoto
()		 1737 Avatar for jsakamoto
148. Watson1978
(Shizuo Fujita)		 1721 Avatar for Watson1978
149. shyouhei
(卜部昌平)		 1709 Avatar for shyouhei
150. sideshowbarker
()		 1696 Avatar for sideshowbarker
151. kt3k
(Yoshiya Hinosawa)		 1679 Avatar for kt3k
152. TimOliver
(Tim Oliver)		 1676 Avatar for TimOliver
153. seratch
(Kazuhiro Sera)		 1672 Avatar for seratch
154. kou
(Sutou Kouhei)		 1670 Avatar for kou
155. norbusan
(Norbert Preining)		 1606 Avatar for norbusan
156. mayocream
(Mayo Takanashi)		 1603 Avatar for mayocream
157. kazeburo
(Masahiro Nagano)		 1599 Avatar for kazeburo
158. hashrock
(hashrock)		 1578 Avatar for hashrock
159. mika-f
(MOCHIZUKI Kanon)		 1577 Avatar for mika-f
160. udzura
(Kondo Uchio)		 1567 Avatar for udzura
161. sorah
(Sorah Fukumori)		 1548 Avatar for sorah
162. nwiizo
(nwiizo)		 1545 Avatar for nwiizo
163. nobu
(Nobuyoshi Nakada)		 1542 Avatar for nobu
164. syuilo
(syuilo)		 1540 Avatar for syuilo
165. kyamagu
(Kota Yamaguchi)		 1529 Avatar for kyamagu
166. koji
(koji)		 1520 Avatar for koji
167. Shougo
(Shougo)		 1512 Avatar for Shougo
168. inokawa
()		 1502 Avatar for inokawa
169. lepture
(Hsiaoming Yang)		 1485 Avatar for lepture
170. kazuho
(Kazuho Oku)		 1484 Avatar for kazuho
171. taisukef
(Taisuke Fukuno)		 1483 Avatar for taisukef
172. waylandzhang
(WAYLAND ZHANG)		 1473 Avatar for waylandzhang
173. sorairolake
(Shun Sakai)		 1464 Avatar for sorairolake
174. pocke
(Masataka Pocke Kuwabara)		 1455 Avatar for pocke
175. Comamoca
(Comamoca)		 1450 Avatar for Comamoca
176. coliff
(Christian Oliff)		 1444 Avatar for coliff
177. fygar256
(Taisuke Maekawa)		 1443 Avatar for fygar256
178. neka-nat
(k-tanaka)		 1442 Avatar for neka-nat
179. privatenumber
(Hiroki Osame)		 1436 Avatar for privatenumber
180. mosuka
(Minoru OSUKA)		 1417 Avatar for mosuka
181. trust-delta
(trust-delta)		 1398 Avatar for trust-delta
182. knu
(Akinori Musha)		 1383 Avatar for knu
183. babarot
(Masaki ISHIYAMA)		 1378 Avatar for babarot
184. qwexvf
(Maruchan)		 1371 Avatar for qwexvf
185. motemen
(Hironao OTSUBO)		 1361 Avatar for motemen
186. otiai10
(Hiromu OCHIAI)		 1360 Avatar for otiai10
187. vraestoren
(huok)		 1356 Avatar for vraestoren
188. cho45
(Satoh, Hiroh)		 1352 Avatar for cho45
189. bokuweb
(bokuweb)		 1348 Avatar for bokuweb
190. touyou
(Fujii Yosuke)		 1343 Avatar for touyou
191. tatsuyafujisaki
(Tatsuya Fujisaki)		 1335 Avatar for tatsuyafujisaki
192. craftzdog
(Takuya Matsuyama)		 1325 Avatar for craftzdog
193. melpon
(melpon)		 1323 Avatar for melpon
194. aoi1026
(AOI)		 1321 Avatar for aoi1026
195. wadackel
(tsuyoshi wada)		 1313 Avatar for wadackel
196. rob0pup
(Robin)		 1312 Avatar for rob0pup
197. yuwata
(Yu Watanabe)		 1311 Avatar for yuwata
198. ymotongpoo
(Yoshi Yamaguchi)		 1306 Avatar for ymotongpoo
199. hotchpotch
(Yuichi Tateno (secon))		 1301 Avatar for hotchpotch
200. peppy
(Dean Herbert)		 1296 Avatar for peppy
201. drasticactions
(Tim Miller)		 1294 Avatar for drasticactions
202. XiaomingX
(Y11)		 1292 Avatar for XiaomingX
203. hatoo
()		 1272 Avatar for hatoo
204. yude
(Takehiro Ogura)		 1270 Avatar for yude
205. mopemope
(Yutaka Matsubara)		 1265 Avatar for mopemope
206. kaityo256
(Hiroshi Watanabe)		 1262 Avatar for kaityo256
207. leaysgur
(Yuji Sugiura)		 1258 Avatar for leaysgur
208. c-bata
(c-bata)		 1251 Avatar for c-bata
209. syohex
(Shohei YOSHIDA)		 1219 Avatar for syohex
210. SachaG
(Sacha Greif)		 1206 Avatar for SachaG
211. faithandbrave
(Akira Takahashi)		 1190 Avatar for faithandbrave
212. piroor
(YUKI "Piro" Hiroshi)		 1187 Avatar for piroor
213. kazu-yamamoto
(Kazu Yamamoto)		 1184 Avatar for kazu-yamamoto
214. egisatoshi
(Satoshi Egi)		 1178 Avatar for egisatoshi
215. miurahr
(Hiroshi Miura)		 1172 Avatar for miurahr
216. yusukebe
(Yusuke Wada)		 1168 Avatar for yusukebe
217. yutannihilation
(Hiroaki Yutani)		 1161 Avatar for yutannihilation
218. daitomanabe
(Daito Manabe)		 1152 Avatar for daitomanabe
219. yshrsmz
(Yasuhiro SHIMIZU)		 1148 Avatar for yshrsmz
220. dai
(dai)		 1145 Avatar for dai
221. hewigovens
(Tao Xu)		 1145 Avatar for hewigovens
222. p-x9
()		 1130 Avatar for p-x9
223. takahirom
(Takahiro Menju)		 1123 Avatar for takahirom
224. viasnake
(snake)		 1112 Avatar for viasnake
225. miyakogi
(miyaco)		 1105 Avatar for miyakogi
226. shimat
(shimat)		 1096 Avatar for shimat
227. akatsuki105
(Akatsuki)		 1094 Avatar for akatsuki105
228. Jxck
(Jxck)		 1088 Avatar for Jxck
229. sakai1250
(sakai taigo)		 1080 Avatar for sakai1250
230. haoict
(Hao Nguyen)		 1075 Avatar for haoict
231. shinh
(Shinichiro Hamaji)		 1071 Avatar for shinh
232. grace2riku
()		 1060 Avatar for grace2riku
233. rhysd
(Linda_pp)		 1055 Avatar for rhysd
234. shirakaba
(Jamie Birch)		 1054 Avatar for shirakaba
235. syumai
(syumai)		 1047 Avatar for syumai
236. moriyoshi
(Moriyoshi Koizumi)		 1047 Avatar for moriyoshi
237. jfbastien
(JF Bastien)		 1040 Avatar for jfbastien
238. iAJue
(阿珏)		 1040 Avatar for iAJue
239. nuskey8
(Yusuke Nakada)		 1038 Avatar for nuskey8
240. eltociear
(Ikko Eltociear Ashimine)		 1036 Avatar for eltociear
241. masarakki
(masarakki)		 1034 Avatar for masarakki
242. lacolaco
(Suguru Inatomi)		 1020 Avatar for lacolaco
243. NicolasDorier
(Nicolas Dorier)		 1016 Avatar for NicolasDorier
244. noborus
(Noboru Saito)		 1016 Avatar for noborus
245. Makio64
(Makio64)		 1015 Avatar for Makio64
246. dsh0416
(Delton Ding)		 1012 Avatar for dsh0416
247. champierre
(Junya Ishihara)		 1012 Avatar for champierre
248. yahonda
(Yasuo Honda)		 997 Avatar for yahonda
249. dvcrn
(David)		 988 Avatar for dvcrn
250. e-jigsaw
(jigsaw)		 988 Avatar for e-jigsaw
251. kaguya0107
(kaguya107)		 982 Avatar for kaguya0107
252. ota-meshi
(Yosuke Ota)		 981 Avatar for ota-meshi
253. dev-yakuza
(DeKu)		 980 Avatar for dev-yakuza
254. fujita
(FUJITA Tomonori)		 958 Avatar for fujita
255. franciscop
(Francisco Presencia)		 954 Avatar for franciscop
256. davetang
(Dave Tang)		 950 Avatar for davetang

Organizations

Rank Organization Members
1. ruby 10
2. asakusarb 7
3. perl-users-jp 5
4. vim-jp 5
5. ruby-no-kai 5
6. sinsai 4
7. scalajp 4
8. cpprefjp 4
9. java-ja 4
10. hiki 4