Save water. Save watts. Save the Play Store.
Apps mode: real, runnable products only — lists, datasets, tutorials and course repos are filtered out.
The most popular things people are building right now — re-checked live from GitHub on every load. Categories are auto-grouped.
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Where the building is happening — live repo counts per field, each counted by its domain keyword in repo names and descriptions. Directional, not an official census: same yardstick for every domain, so the ranking is the story. Each row also names the domain's top repo.
Tap “Run the census” — it takes about half a minute (GitHub rations free searches, so it counts one domain at a time).