Graphserver

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

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.

• http://graphserver.github.com/graphserver - project homepage
• https://groups.google.com/forum/#!forum/graphserver - Google group, including some example uses
• Regarding Walk Score usage:
  • Jarrett Walker discusses the use of Graphserver in Walkscore.com's Transit Maps
  • http://blog.walkscore.com/2009/03/transit-and-real-estate/
  • Walkscore.com "technology preview" using Graphserver in their archive