Hey Product Hunt 👋 Commitgraph started with a small annoyance. I wanted to know who the most active developers on GitHub actually are — and every site that answers that question hands you the same thing: a paginated HTML table of usernames and one number. That number is the least interesting thing in the data. It can't show you the shape of someone's year, whether a rank is climbing or collapsing, how contributions relate to followers, or where the activity really is. So I built the version I wanted. Every ranking has a chart behind it: 371-day contribution heatmaps, rank-movement bump charts, a tile-grid world map, follower/contribution scatter. Worldwide, by country, and by city. There's a free REST API and an MCP server over the same snapshot, so you can ask an AI assistant "who's the top developer in Seoul" and it can actually go and check. The part I didn't expect to matter most: saying what I *don't* know. Location is free text people type themselves. GitHub only exposes private contributions as a total. Some calendars are estimated rather than fetched. Accounts that are obviously automation get excluded. All of it is labelled in the UI and explained on /methodology, because every other site in this category presents its ranking as fact. Two things that surprised me while building: GH Archive turns out to be a gift — 27 million events processed for zero API budget, which is how the candidate list gets built without hammering GitHub. And I was wrong about the thing I was most confident in. I'd designed the whole pipeline around batching 100 users per GraphQL query. GitHub serves exactly 10 before it returns "Resource limits for this query exceeded." Measuring it instead of assuming it changed the entire collection schedule. It's free, there's no signup, and the data is a committed snapshot you can diff in git. Would genuinely love to know: what's the first thing you looked up? And what's missing that you expected to be there?