# mapsforge/mapsforge

Vector map library and writer - running on Android and Desktop.

Repository: https://github.com/mapsforge/mapsforge
Canonical: https://ross.abutalabs.com/products/mapsforge
Language: Java
License: LGPL-3.0
License Family: copyleft
Topics: openstreetmap, java, map, vector
Last push: 2026-08-23T07:11:05+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 86, longevity 100
- inputs: {"age_days": 4318, "days_push": 10, "days_rel": 13, "gap_med": 70.0, "n_releases_24m": 11}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1403, forks 400 (observed 2026-08-28T04:04:37.861368+00:00)

## What it is
A Java library for rendering vector maps based on OpenStreetMap data, running on Android and desktop JVM applications. It includes tools to compile custom map files in a compact binary format, XML-based render themes, offline hillshading, and POI search support.

## Use cases
- display offline OpenStreetMap vector maps in an Android app
- render maps with rotation and hillshading in a Java desktop application
- compile my own maps from OSM data into a compact map file format
- style map rendering with custom XML themes
- add offline POI search to a mapping application

## When to choose
- you need fully offline vector map rendering on Android or Java desktop
- you want to build custom maps from OpenStreetMap data
- you need flexible map styling via XML render themes
- you want a permissive-enough license (LGPL with waived constraints) for closed-source apps

## When to avoid
- you need interactive web-based maps (use Leaflet or MapLibre instead)
- you require online tile streaming as the primary use case
- your project is not on the JVM or Android

## Facets
- artifact type: library
- maturity: active
- function: graphics, file-system, sdk
- domain: android-tools, cross-platform
- platform: jvm, cross-platform
- tags: openstreetmap, vector-maps, map-rendering, offline-maps, hillshading, map-writer, poi-search, maps, geospatial, android, desktop

## Member repositories
- mapsforge/mapsforge (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:37.861368+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:38:55.828955+00:00, confidence not recorded.
  - readme: https://github.com/mapsforge/mapsforge (fetched 2026-08-28T04:04:37.861368+00:00, sha ffb47ca726f2)
- Data as of 2026-08-30T08:39:29.467469+00:00.