Ross ROSS = Recommend OSS · open-source software intelligence for agents

heremaps/harp.gl

3D web map rendering engine written in TypeScript using three.js observed · 2026-08-28

github.com/heremaps/harp.gl · TypeScript · Apache-2.0 (permissive) · archived observed · 2026-08-28

Health v2 · maintenance only

10/100

  • Activity 0
  • Release rhythm 8
  • Longevity 100

Flags: archived

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 2935
  • days_rel: n/a
  • days_push: 1307
  • n_releases_24m: 0

Full methodology

Adoption not part of the score

1313 stars · 198 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

harp.gl is an open-source 3D map rendering engine written in TypeScript and built on three.js/WebGL. It enables themeable, high-performance 3D map visualizations in web applications with modular data providers.

Use cases

  • render 3D maps in a web browser
  • build animated map visualizations with webgl
  • create themeable maps that change style on the fly
  • display custom map data with a modular rendering engine
  • build a performant map application with web workers

When to choose

  • you need a customizable, themeable 3D map engine built on three.js
  • you want full control over map data providers and rendering modules
  • you are building a bespoke geospatial visualization and don't need vendor support

When to avoid

  • you want a production-supported mapping product - HERE recommends its Maps API for JavaScript instead
  • you need active maintenance - development stopped in 2022 and releases have ceased
  • you only need simple 2D maps or basic embedded maps

Facets

library · maturity maintenance

graphics data-visualization web-scraping web-development graphics browser 3d-maps webgl threejs map-rendering typescript here-maps geospatial maps web-server nodejs

1 source

Member repositories

RepositoryRoleHealth v2
heremaps/harp.glmain10

For agents

markdown · JSON · MCP: product_card(name="heremaps/harp.gl")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem