{
  "kind": "country",
  "slug": "japan",
  "name": "Japan",
  "title": "Top observed GitHub contributors in Japan",
  "generated_at": "2026-05-07T06:44:15.754Z",
  "fresh_until": "2026-05-14T06:44:15.754Z",
  "status": "fresh",
  "method": "github-graphql-one-year-contribution-totals",
  "source_run": "2026-05-07",
  "history": {
    "weeks": [
      "2026-05-07"
    ],
    "ranked_items": [
      20
    ],
    "top_10_signal": [
      25135
    ]
  },
  "code": "JP",
  "candidate_count": 42403,
  "caveats": [
    "Live data uses GitHub REST search plus public profile fields; it is an observed sample, not a complete census.",
    "Location matching uses free-text GitHub profile locations and must not be treated as verified nationality or residence.",
    "Contributor pages expose public repository counts plus one-year GitHub contribution totals for commits and pull requests from the official GitHub GraphQL API. These are not all-time totals.",
    "The OSSRank score is retained only as a combined proxy; raw commits, pull requests, and repository tables are preferred for review and SEO pages."
  ],
  "entries": [
    {
      "login": "manman4",
      "name": "manman4",
      "profile_url": "https://github.com/manman4",
      "public_contributions": 8069,
      "public_repos": 37,
      "public_gists": 0,
      "observed_public_commits": 8069,
      "observed_public_pull_requests": 1,
      "followers": 4296,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 1
    },
    {
      "login": "mattn",
      "name": "mattn",
      "profile_url": "https://github.com/mattn",
      "public_contributions": 3082,
      "public_repos": 2175,
      "public_gists": 1944,
      "observed_public_commits": 3082,
      "observed_public_pull_requests": 380,
      "followers": 13328,
      "location": "Osaka, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 2
    },
    {
      "login": "keijiro",
      "name": "Keijiro Takahashi",
      "profile_url": "https://github.com/keijiro",
      "public_contributions": 2682,
      "public_repos": 916,
      "public_gists": 215,
      "observed_public_commits": 2682,
      "observed_public_pull_requests": 7,
      "followers": 23595,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 3
    },
    {
      "login": "matz",
      "name": "Yukihiro \"Matz\" Matsumoto",
      "profile_url": "https://github.com/matz",
      "public_contributions": 2606,
      "public_repos": 12,
      "public_gists": 6,
      "observed_public_commits": 2606,
      "observed_public_pull_requests": 42,
      "followers": 10399,
      "location": "Matsue, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 4
    },
    {
      "login": "peppy",
      "name": "Dean Herbert",
      "profile_url": "https://github.com/peppy",
      "public_contributions": 2040,
      "public_repos": 89,
      "public_gists": 9,
      "observed_public_commits": 2040,
      "observed_public_pull_requests": 380,
      "followers": 5007,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 5
    },
    {
      "login": "onevcat",
      "name": "Wei Wang",
      "profile_url": "https://github.com/onevcat",
      "public_contributions": 1852,
      "public_repos": 253,
      "public_gists": 124,
      "observed_public_commits": 1852,
      "observed_public_pull_requests": 364,
      "followers": 15801,
      "location": "Yokohama, Japan / China",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 6
    },
    {
      "login": "kazupon",
      "name": "kazuya kawaguchi",
      "profile_url": "https://github.com/kazupon",
      "public_contributions": 1537,
      "public_repos": 346,
      "public_gists": 34,
      "observed_public_commits": 1537,
      "observed_public_pull_requests": 309,
      "followers": 4304,
      "location": "Tokyo, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 7
    },
    {
      "login": "Shougo",
      "name": "Shougo",
      "profile_url": "https://github.com/Shougo",
      "public_contributions": 1443,
      "public_repos": 194,
      "public_gists": 94,
      "observed_public_commits": 1443,
      "observed_public_pull_requests": 45,
      "followers": 5034,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 8
    },
    {
      "login": "wasabeef",
      "name": "Daichi Furiya",
      "profile_url": "https://github.com/wasabeef",
      "public_contributions": 988,
      "public_repos": 61,
      "public_gists": 11,
      "observed_public_commits": 988,
      "observed_public_pull_requests": 72,
      "followers": 9627,
      "location": "Tokyo, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 9
    },
    {
      "login": "lepture",
      "name": "Hsiaoming Yang",
      "profile_url": "https://github.com/lepture",
      "public_contributions": 836,
      "public_repos": 188,
      "public_gists": 59,
      "observed_public_commits": 836,
      "observed_public_pull_requests": 35,
      "followers": 8807,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 10
    },
    {
      "login": "XiaomingX",
      "name": "Y11",
      "profile_url": "https://github.com/XiaomingX",
      "public_contributions": 833,
      "public_repos": 54,
      "public_gists": 0,
      "observed_public_commits": 833,
      "observed_public_pull_requests": 3,
      "followers": 11409,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 11
    },
    {
      "login": "kenjinote",
      "name": "kenji",
      "profile_url": "https://github.com/kenjinote",
      "public_contributions": 806,
      "public_repos": 678,
      "public_gists": 55,
      "observed_public_commits": 806,
      "observed_public_pull_requests": 3,
      "followers": 21428,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 12
    },
    {
      "login": "domenic",
      "name": "Domenic Denicola",
      "profile_url": "https://github.com/domenic",
      "public_contributions": 618,
      "public_repos": 86,
      "public_gists": 208,
      "observed_public_commits": 618,
      "observed_public_pull_requests": 329,
      "followers": 5599,
      "location": "Tokyo, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 13
    },
    {
      "login": "guo-yu",
      "name": "Guo Yu",
      "profile_url": "https://github.com/guo-yu",
      "public_contributions": 593,
      "public_repos": 215,
      "public_gists": 15,
      "observed_public_commits": 593,
      "observed_public_pull_requests": 0,
      "followers": 5748,
      "location": "Tokyo, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 14
    },
    {
      "login": "craftzdog",
      "name": "Takuya Matsuyama",
      "profile_url": "https://github.com/craftzdog",
      "public_contributions": 581,
      "public_repos": 162,
      "public_gists": 34,
      "observed_public_commits": 581,
      "observed_public_pull_requests": 31,
      "followers": 11579,
      "location": "Osaka, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 15
    },
    {
      "login": "zcbenz",
      "name": "Cheng",
      "profile_url": "https://github.com/zcbenz",
      "public_contributions": 572,
      "public_repos": 39,
      "public_gists": 0,
      "observed_public_commits": 572,
      "observed_public_pull_requests": 209,
      "followers": 7848,
      "location": "Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 16
    },
    {
      "login": "marcan",
      "name": "Hector Martin",
      "profile_url": "https://github.com/marcan",
      "public_contributions": 60,
      "public_repos": 92,
      "public_gists": 48,
      "observed_public_commits": 60,
      "observed_public_pull_requests": 6,
      "followers": 5073,
      "location": "Tokyo, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 17
    },
    {
      "login": "drakeet",
      "name": "Drakeet",
      "profile_url": "https://github.com/drakeet",
      "public_contributions": 30,
      "public_repos": 19,
      "public_gists": 15,
      "observed_public_commits": 30,
      "observed_public_pull_requests": 1,
      "followers": 8011,
      "location": "Kyoto, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 18
    },
    {
      "login": "dennybritz",
      "name": "Denny Britz",
      "profile_url": "https://github.com/dennybritz",
      "public_contributions": 22,
      "public_repos": 62,
      "public_gists": 5,
      "observed_public_commits": 22,
      "observed_public_pull_requests": 0,
      "followers": 9810,
      "location": "Tokyo, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 19
    },
    {
      "login": "AtsushiSakai",
      "name": "Atsushi Sakai",
      "profile_url": "https://github.com/AtsushiSakai",
      "public_contributions": 8,
      "public_repos": 209,
      "public_gists": 22,
      "observed_public_commits": 8,
      "observed_public_pull_requests": 3,
      "followers": 4781,
      "location": "Kanagawa, Japan",
      "location_confidence": "profile-text-match",
      "notable_repositories": [],
      "rank": 20
    }
  ]
}