Exversion is hoping the need to access wide-ranging open datasets has matured enough to create a viable business as an open data marketplace. Their new Exversion API provides developers with a RESTful interface to search and access the open datasets stored on the Exversion data platform. At present, the API returns queries in JSON or XML format, with full XML support to be provided in the near future.
Google added a new layer to its own mapping application to show transit routes in the 400+ cities where it has data. The result is an easy way to see nearby bus and train stops on the web or on some mobile phones. Unfortunately, neither the data nor the imagery is available in the API version of Google Maps.