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Top 16 JavaScript Geospatial Projects
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Puter.js
Puter.js - The Backend for AI-Generated Apps. One-shot full-stack apps with your existing AI coding tool. Puter.js gives you Auth, Storage, DB, AI & more, with up to 90% fewer AI tokens than other backend platforms.
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proj4js
JavaScript library to transform coordinates from one coordinate system to another, including datum transformations
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WebWorldWind
The NASA WorldWind Javascript SDK (WebWW) includes the library and examples for creating geo-browser web applications and for embedding a 3D globe in HTML5 web pages.
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Project mention: Some combinatorial applications of spacefilling curves | news.ycombinator.com | 2026-07-28
Yes, for example, the datasets at this page: https://adsb.exposed/ are indexed by the Morton curve: https://github.com/ClickHouse/adsb.exposed/#database-and-que... and https://reversedns.space/ as well.
Also, a trivial application is image compression. Let's say you have a PNG image. PNG uses zlib, so if instead you take a raw bitmap and compress it with ZSTD, it typically will be better, but if you also sort pixels by the Hilbert curve first and then compress with ZSTD, it will be typically even better.
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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gdal3.js
Convert raster and vector geospatial data to various formats and coordinate systems entirely in the browser.
The previous article introduced a complete compilation script that successfully builds the WebAssembly version of GDAL.
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analytics-toolbox-core
A set of UDFs and Procedures to extend BigQuery, Snowflake, Redshift, Postgres and Databricks with Spatial Analytics capabilities
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equinox
Equinox is an open source platform that supports the holistic risk management of sustainable finance projects (by open-risk)
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GeoPicker
Geospatial data picker via fast Api Rest interface, not only another simple elevation service.
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edinburghjs-meetup-walktimedemo
A simple web app demonstrating how to calculate areas within a 15 min walking distance from a location, built with the ArcGIS Maps SDK for Javascript.
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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).
JavaScript Geospatial discussion
JavaScript Geospatial related posts
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Printable Route Directions with Geoapify: Complete Demo Walkthrough
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JavaScript's For-Of Loops Are Fast
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Cesium VS xeokit SDK - a user suggested alternative
2 projects | 7 May 2025 -
NEON MAPP - XYZ Spatial Data Interfaces for 🌩 PostGIS
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Cesium: Open-Source JavaScript Library for High-Performance 3D Maps
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How to Build a Choropleth Map in JavaScript
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Cost to implement SAP
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A note from our sponsor - SaaSHub
www.saashub.com | 8 Aug 2026
Index
What are some of the best open-source Geospatial projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Cesium | 15,517 |
| 2 | 3DTilesRendererJS | 2,414 |
| 3 | proj4js | 2,235 |
| 4 | h3-js | 1,077 |
| 5 | WebWorldWind | 996 |
| 6 | koop | 711 |
| 7 | adsb.exposed | 452 |
| 8 | gdal3.js | 427 |
| 9 | analytics-toolbox-core | 209 |
| 10 | opensphere | 202 |
| 11 | geos-wasm | 114 |
| 12 | earthatile | 58 |
| 13 | equinox | 52 |
| 14 | smartmap | 50 |
| 15 | GeoPicker | 43 |
| 16 | edinburghjs-meetup-walktimedemo | 3 |
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