🏆 Notable contributions
Popular open-source repos they've shipped to (commits + PRs)
Score breakdown
🛠 Featured work
Their own popular and pinned repositories
🧬 Stack & domains
🧬 Most similar developers
Closest profile, nearby score
🔥 Full roast
🔥 CNCF Ambassador, Karmada core related repo contributor, 1,872-star Go book repo leading his profile, 1,361 contributions last year, 549 followers vs 16 following — this isn't an open source contributor, this is a c
RainbowMango — 96.30/100 · GOD (Legendary · Hall of Fame)
TL;DR: Cloud-native OSS veteran with verified CNCF/Karmada roles, 570 PRs across 21 high-star repos, and a legit 1,872-star Go book as his home turf crown jewel — the only head-scratcher is his 16-following count, which is way too low for someone with 549 fans.
| Dimension | Score | Notes |
|---|---|---|
| Account maturity | 10/10 | Registered ~12 years, active across 13 contribution years — this account predates most cloud-native projects and has outlasted countless trend-jumpers. |
| Original project quality | 15.5/18 | 2,031 total stars across original repos, topped by GoExpertProgramming's 1,872 stars (quality score 0.9) — a legitimately useful Go programming book repo with real content, not a README-only placeholder, though the rest of his original projects barely crack triple-digit stars. |
| Contribution quality | 27/27 | 1,141 merged PRs out of 1,171 total (1% maintainer rejection rate), only 15 maintainer-closed unmerged PRs, 11 self-closed external PRs, 0 self-closed own-repo PRs — no spam, no PR drive-bys, just consistent, accepted work across the board. |
| Ecosystem / maintenance impact | 20/20 | All-time: 570 PRs + 594 commits into 21 high-star popular repos (including Kubernetes, Harbor, Karmada, metrics-server). The 12 verified file-level samples are just a quality spot-check, not the full count of his massive cross-project impact. |
| Community influence | 7.2/8 | 549 followers vs only 16 accounts followed — a wildly lopsided ratio that signals genuine influence, not follow-for-follow farming. |
| Activity authenticity | 16.6/17 | 1,361 contributions last year, last activity recorded today — no ghost town energy, no long gaps to fake activity, just consistent, real work over the past 12 months. |
Red flags No red flags detected. No signs of star inflation, PR spam, templated PR flooding, or fake activity. All contribution signals point to genuine, consistent open source work.
Score calibration No extra adjustment. The base score of 96.3 already fully prices in all visible qualitative signals: verified CNCF Ambassador and Karmada maintainer roles, high-quality usable original project, massive all-time cross-project impact, clean contribution record, and consistent recent activity.
Verdict Normal, high-trust open source contributor. A verified cloud-native maintainer with a long track record of accepted, non-trivial contributions to top-tier projects and a legitimate original project to his name — no concerns, just a solid benchmark for what a productive, genuine GitHub profile should look like.