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Top 19 C++ Openstreetmap Projects
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There is an issue on their GitHub relating to customisable contraction hierarchies, but it doesn't seem to have gotten much interest.
https://github.com/Project-OSRM/osrm-backend/issues/6574
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Project mention: Prevent OSS PR/issue spam like a Pro (+ some unrelated fun):D | news.ycombinator.com | 2026-05-07
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Project mention: MapLibre Tile: a modern and efficient vector tile format | news.ycombinator.com | 2026-01-26
Unfortunately, Tilemaker hasn't planned or cannot plan to support MLT in the medium-term.
That will leave a significant part of the community out of this transition.
See this interesting (and quite heated) discussion : https://github.com/systemed/tilemaker/issues/856
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View the GitHub repository
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Project mention: How to build and serve custom simplified maps with OpenMapTiles | dev.to | 2026-01-13
Osmium: a tool used to process OpenStreetMap data.
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Project mention: Motis – High-performance public transport routing engine | news.ycombinator.com | 2026-01-14
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Project mention: Show HN: GeoDesk Geo-Object Librarian version 2.1 | news.ycombinator.com | 2025-10-23
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ Openstreetmap discussion
C++ Openstreetmap related posts
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Prevent OSS PR/issue spam like a Pro (+ some unrelated fun):D
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OsmAnd's Faster Offline Navigation
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MapLibre Tile: a modern and efficient vector tile format
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How to build and serve custom simplified maps with OpenMapTiles
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OpenStreetMap's software ecosystem and tools
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Self hosted maps for (practically) free
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A community-led fork of Organic Maps
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Jun 2026
Index
What are some of the best open-source Openstreetmap projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Open Source Routing Machine (OSRM) | 7,795 |
| 2 | valhalla | 5,802 |
| 3 | tilemaker | 1,858 |
| 4 | osm2pgsql | 1,659 |
| 5 | fmm | 1,028 |
| 6 | osmium-tool | 679 |
| 7 | motis | 525 |
| 8 | merkaartor | 334 |
| 9 | OSMExpress | 271 |
| 10 | osmscout-server | 185 |
| 11 | osmin | 153 |
| 12 | s60-maps | 95 |
| 13 | osr | 54 |
| 14 | GeoDesk for Python | 50 |
| 15 | ImOsmDemo | 36 |
| 16 | lumixengine_maps | 34 |
| 17 | geodesk-gol | 16 |
| 18 | libgeodesk | 16 |
| 19 | mama | 14 |
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