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de-N Dieser Benutzer spricht Deutsch als Muttersprache.
en-3 This user has advanced knowledge of English.
it-2 Questo utente può contribuire con un livello intermedio in italiano.
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My name is Martin Raifer and my OSM user name is tyr_asd. Here are some stats about my mapping activity.

You can contact me via a direct message, follow me on twitter or drop me an e-mail.


Here are a few things I made for OpenStreetMap (or take a look at my github profile):

overpass turbo

Overpass turbo ( is a web based data mining tool for OpenStreetMap. read more

OSM Analytics

OSM Analytics ( is a tool for visualising and analysing mapping progress. It was made for and in cooperation with HOT.


A tool (and API) that generates historical usage graphs for each of OSM's tags (with daily granularity) and allows one to compare different tags against each other. read more

node density visualization

I've visualized OpenStreetMap's node density. read more

osm tile log viewer

A viewer for OSM's tile access logs. read more

quality assurance feeds generator

A tool to create personalized feeds for OpenStreetMap quality assurance tools. read more

more misc stuff