6.0.20240526 • Public • Published

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name-suggestion-index ("NSI")

Canonical features for OpenStreetMap, collected manually and via the NSI Collector planet scan.

What is it?

The goal of this project is to maintain a canonical list of commonly used features for suggesting consistent spelling and tagging in OpenStreetMap.

👉   Watch the video from our talk at State of the Map US 2019 to learn more about this project!

Browse the index

You can browse the name-suggestion-index and check Wikidata links for accuracy at

How it's used

When mappers create features in OpenStreetMap, they are not always consistent about how they name and tag things. For example, we may prefer McDonald's tagged as amenity=fast_food but we see many examples of other spellings (Mc Donald's, McDonalds, McDonald’s) and taggings (amenity=restaurant).

Building a canonical feature index allows two very useful things:

  • We can suggest the most "correct" way to tag things as users create them while editing.
  • We can scan the OSM data for "incorrect" features and produce lists for review and cleanup.

Name Suggestion Index in use in iD

The name-suggestion-index is in use in iD when adding a new item

Currently used in:

About the index

See the project wiki for details.


We're always looking for help!

If you have any questions or want to reach out to a maintainer, ping @bhousel, @1ec5, or @tas50 on:


name-suggestion-index is available under the 3-Clause BSD License. See the file for more details.

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  • bhousel
  • quincylvania
  • tas50
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