Cartopolis
OpenStreetMap rendered like it's 1999
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HN · launched Jul 22, 2026 · 13 upvotes (top 38%) · 2 views
Niche: interactive mapping platforms · 191 launches, 16 in the last 7 days ▲ +7% · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Prosumer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 191 launches in interactive mapping platforms →
Could you build this?
Partial Creating a web map UI is easy, but engineering a custom GIS vector-rendering pipeline that simplifies raw OpenStreetMap topology, handles label collision, and applies vintage web-safe palette rendering requires specialized cartographic rendering knowledge.
What it would actually take: The pipeline requires ingestion of OSM PBF extracts using tools like Osmium or GDAL, followed by custom rasterizer code in Python or Rust that applies integer snapping, Douglas-Peucker line simplification, label collision placement algorithms, and GIF89a 216-color quantization. The hard challenge is tuning cartographic feature-selection rules across varying zoom levels without antialiasing artifacts causing visual incoherence.
Discussion
2 comments analyzed.
Concerns raised: Search only covers Switzerland in demo, Search doesn't find many places
Feature requests: Better error messages indicating geographic coverage, Expand search coverage beyond Switzerland
Competitors
Other products that read as similar to this one : 241 launches clear the similarity bar, closest 8 shown.
Attention rank: #82 of 242 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 260 days after the earliest competitor.
- CityDiffusion2 · github · 2026-10-29 · 24 upvotes · similarity 0.49
- izomapa · github · 2026-11-03 · 54 upvotes · similarity 0.49
- Cartopolis, interactive globe-sized 3D world · hn · 2026-09-27 · 19 upvotes · similarity 0.46
- openMapper · github · 2026-10-23 · 26 upvotes · similarity 0.46
- RustGIS · github · 2026-10-10 · 981 upvotes · similarity 0.45
- Tool to turn a repo into map · hn · 2026-07-27 · 5 upvotes · similarity 0.44
- openOMSI · github · 2026-09-27 · 192 upvotes · similarity 0.43
- maplibre-warp · github · 2026-09-14 · 7 upvotes · similarity 0.43
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