Mapnificent shows you the area you can reach with public transport from any point in a given time. It is available for major cities in the US and world wide.
You may be interested to watch a video about what Mapnificent can do, read a blog post about how Mapnificent works or jump to the Mapnificent API Documentation.
Mapnificent was originally inspired by MySociety's Mapumental which is sadly still in private beta.
Mapnificent was created by StefanWehrmeyer.
Please give feedback or contact me directly at email@example.com.
53177 Bonn, Germany
Follow @mapnificent on Twitter here!
(c) San Francisco Municipal Transportation Agency: Reproduced with permission granted by the City and County of San Francisco. The information has been provided by means of a nonexclusive, limited, and revocable license granted by the City and County of San Francisco. The City and County of San Francisco does not guarantee the accuracy, adequacy, completeness or usefulness of any information. The City and County of San Francisco provides this information "as is," without warranty of any kind, express or implied, including but not limited to warranties of merchantability or fitness for a particular purpose, and assumes no responsibility for anyone's use of the information. Full License