(Part of Open Source Transport Informatics tools listing, for the OSSTIP project, especially OSSTIP/WP2- Transit Informatics tools review.)

Fig 1: Example of Graphserver in use as part of a beta test of transit accessibility in the http://www.walkscore.com platform.

Started in 2004 by MIT Researcher Bradley Martin-Anderson, GraphServer is an Open Source multi-modal public transport trip router, written in Python.

One of the uses of GraphServer was providing the back-end computations as part of the Transit Time Maps visual application on the Walk Score website.

Much of the core capability of Graphserver was also ported into the OpenTripPlanner tool.

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