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Graphhopper
Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
(New version: https://www.graphhopper.com/wp-content/uploads/2017/07/astar...)
bi-directional Dijkstra https://karussell.files.wordpress.com/2012/06/bidijkstra.gif
This uses a primitive Swing UI https://github.com/graphhopper/graphhopper/blob/master/tools...
And it can be color encoded too https://www.graphhopper.com/blog/2016/01/19/alternative-road... which is inspired from others: https://www.graphhopper.com/blog/2015/12/14/roads-to-rome-fr...
Or here I used Deck.gl with time-dependent data: https://www.graphhopper.com/blog/2018/07/04/high-precision-r...