Tagstat

Tagstat was a system providing statistics on tag usage within the OpenStreetMap database. It was similar to Tagwatch, however whilst Tagwatch divided the planet into large areas (countries, continents, planet), Tagstat offered statistics about the whole planet.

Both Tagstat and Tagwatch are now discontinued. A replacement service is available at Taginfo.

Development & API

Tagstat was written and run by User:petschge. It's source code - PHP with a java indexer (PlanetReader.java) - is available here.

It had an XML API, and comment features allowing users to comment on a tag or key, and a mechanism for voting comments up and down.

Tagstat was a step towards User:Richard's vision of a floaty cloud tagwatch on steroids

• http://tagstat.telascience.org/xmlsearch.php?action=values&key=highway
• http://tagstat.telascience.org/xmlsearch.php?action=fulltext&key=ATM

Alternatives

• Taginfo - AJAX interface written in Ruby with a C++/Sqlite backend
• Map Features - tag documentation maintained manually by the community
• Tagwatch (Discontinued) - Now discontinued but source code remains online
• OSMdoc (Discontinued) - AJAX interface written in Python using Django