Top 6 Direction Open-Source Projects

Graphhopper

26 4,673 9.3 Java

Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

Project mention: The Open Source GraphHopper Routing Engine 8.0 Released | news.ycombinator.com | 2023-10-18

Well I think what he means is that we dropped the explicit support of Android and the example app with offline maps (Mapsforge), see this issue: https://github.com/graphhopper/graphhopper/issues/1940
But offline routing should still work on Android. But as you need JDK 1.8 support this will exclude a few older Android versions and devices, I think.

valhalla

9 4,174 9.3 C++

Open Source Routing Engine for OpenStreetMap

Project mention: Seeking a Simple and Cost-Effective Tool for Calculating Distances and Travel Times in Node.js Backend | /r/node | 2023-06-29

SurveyJS

surveyjs.io sponsored

Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
google-maps-services-js

1 2,821 9.1 TypeScript

Node.js client library for Google Maps API Web Services
JDropDownAlert

0 72 0.0 Swift

Simple DropDown Alert View For Any iOS Projects.
graphhopper-maps

16 72 8.3 TypeScript

GraphHopper Maps - Open Source Route Planner UI

Project mention: Happy Birthday OpenStreetMap | news.ycombinator.com | 2023-08-09

https://f-droid.org/packages/com.graphhopper.maps/
Unlike most OSM apps it requires an internet connection but has the advantage of an address search with auto complete and alternative routes.
Or use the website https://graphhopper.com/maps/ (disclaimer: I'm one of the founders of GraphHopper)
Both come with a custom model editor (gear button in the top left) where you can tweak the routing preferences to your liking like prefering more the official bike routes or more elevation avoidance or a slower speed etc.

maplibre-gl-directions

1 64 7.2 TypeScript

A plugin to show routing directions on a MapLibre GL JS map

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).