San Francisco’s great about publishing machine-readable info about itself for developers & mapping geeks to play with.
- Datasf.org collects data sets like the NextMuni bus arrival feed, land use, street sweeping schedule, zoning, terrain elevation & seismic hazards.
- The SFViewer utility showed me I was about to get a parking ticket without leaving the comfort of my easy chair.
- A collection of interesting shapefiles from sfgov.org
- BART feeds for developers