A brewery map of the world based on Openstreetmap. bas.
Open Brewery Map is a FOSS project by Sven Geggus based on Open Data from Openstreetmap.
Source code of the Web frontend as well as the backend is available at GitHub.
The data shown here is solely extracted from Openstreetmap and updated on an hourly basis.
Information about tagging of breweries can be found on the Openstreetmap Wiki.