# opentripplanner/OpenTripPlanner

An open source multi-modal trip planner

Repository: https://github.com/opentripplanner/OpenTripPlanner
Canonical: https://ross.abutalabs.com/products/opentripplanner
Homepage: http://www.opentripplanner.org
Language: Java
License: NOASSERTION
License Family: other
Last push: 2026-08-26T14:06:18+00:00

## Health v2 (maintenance only)
Score: 82/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 51, longevity 100
- inputs: {"age_days": 5525, "days_push": 7, "days_rel": 168, "gap_med": 176.0, "n_releases_24m": 5}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2722, forks 1137 (observed 2026-08-28T04:07:15.610056+00:00)

## What it is
OpenTripPlanner is an open-source, server-side Java application for multi-modal trip planning, computing itineraries that combine public transit with walking, biking, bike share, and ride hailing. It builds routing networks from GTFS and OpenStreetMap data, applies real-time service updates, and exposes GraphQL APIs for web and mobile clients.

## Use cases
- plan public transit trips with walking and biking connections
- build a journey planner API from GTFS and OpenStreetMap data
- power a transit navigation mobile app with real-time disruptions
- run a self-hosted multimodal route planner for a city or region
- analyze transportation network accessibility
- combine bike share and ride hailing with scheduled transit in routing

## When to choose
- you need open-source transit trip planning with real-time GTFS updates
- you want routing built from open standard data (GTFS, OpenStreetMap)
- you need a GraphQL journey-planning API for web or mobile clients
- you're deploying regional or national passenger information services

## When to avoid
- you only need driving directions or car-only navigation
- you need a turnkey hosted service rather than a self-run Java server
- your data isn't in GTFS or OpenStreetMap-compatible formats

## Facets
- artifact type: service
- maturity: stable
- function: routing, api-framework, graphql, http-server, search-engine
- domain: travel, apis, self-hosted
- platform: jvm, windows, self-hosted
- tags: trip-planning, gtfs, openstreetmap, transit, multimodal-routing, journey-planner, mobility, maps, real-time, linux, macos, docker, web-server

## Member repositories
- opentripplanner/OpenTripPlanner (main) score 82

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:15.610056+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 2026-08-30T02:15:11.882993+00:00, confidence not recorded.
  - readme: https://github.com/opentripplanner/OpenTripPlanner (fetched 2026-08-28T04:07:15.610056+00:00, sha a229bd398c3c)
  - homepage: http://www.opentripplanner.org (fetched 2026-08-29T09:58:05.812244+00:00, sha ab8c8ce30d7a)
  - site_page: http://docs.opentripplanner.org (fetched 2026-08-29T09:58:05.821086+00:00, sha afeb762f95a5)
- Data as of 2026-08-30T08:39:29.467469+00:00.