How can I find a specific kind of vendor

Question

How do I find what streets have, say, grocery vendors, and even better, which street with a grocery vendor is closest to my location?

Answer 1

Try Zog's Glitchy Tools, a collection of data gleaned from the Glitch API. Specifically, the locations page shows details of Vendors, Trees, Resources, etc and clicking on a specific one will tell you the closest location and how to get there from your current location.

Answer 2

There are little icons on the map that show you what types of vendors are on what "streets".