SF Rats

SF Rats is a live map of free and nearly-free things to do around the Bay Area — shows, festivals, museum free days, oddball community events — built with React, Leaflet, and Supabase.

The city is full of free joy that's scattered across newsletters and buried event pages. SF Rats puts it on one map, keeps it current, and lets anyone submit finds. Open contribution is the point: the map gets better because people who love free stuff feed it.

Live app and source below.