Cartopolis
OpenStreetMap rendered like it's 1999
Details
- External ID
- 49010890
- Source
- HN
- Company
- —
- Product
- Cartopolis
- Website domain
- seriot.ch
- Launched
- July 22, 2026
- Cohort
- —
- Upvotes
- 13
- Upvotes percentile
- 0.6200716845878136
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Enrichment
- Theme
- document processing and generation tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- retro-styled openstreetmap renderer
- Manually corrected
- False
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 — 99 launches clear the similarity bar, closest 8 shown.
Attention rank: #34 of 100 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 260 days after the earliest competitor.
- Cartopolis, interactive globe-sized 3D world · hn · 2026-09-27 · 19 upvotes · similarity 0.45
- Tool to turn a repo into map · hn · 2026-07-27 · 5 upvotes · similarity 0.43
- Millennium-Tour-Local-Version · github · 2026-09-22 · 35 upvotes · similarity 0.43
- Free Online GIS Viewer and Format Converter · hn · 2026-06-30 · 8 upvotes · similarity 0.43
- openOMSI · github · 2026-09-27 · 133 upvotes · similarity 0.43
- maplibre-warp · github · 2026-09-14 · 7 upvotes · similarity 0.42
- I built Istanbul live transit map · hn · 2026-05-20 · 11 upvotes · similarity 0.42
- Tileserver-RS · hn · 2026-04-02 · 5 upvotes · similarity 0.41
Other launches for this product
- No other launches for this product.
Same idea, different domain
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