Open source alternative to ArcGIS Service Area Solver (network analyst extension)?

This page summarizes the projects mentioned and recommended in the original post on /r/gis

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  1. NetworkX

    Network Analysis in Python

    Those algorithms are all already available in certain python or R libraries (e.g. https://networkx.org/ for python). You could also implement it yourself since all these graph algorithms are documented really well.

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  3. Graphhopper

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

    github: https://github.com/graphhopper/graphhopper

  4. Hqgis

    A Plugin for QGIS to use the HERE API

    The best tool is Hqgis plugin for QGIS, which uses the Here API. It's free up to 30,000 routing queries per month. It does Geocoding, POI Search, and Isochrones:

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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