CycloGraph is an application to plot the gradient of roads using distances and heights. An open source alternative to Salitaker for plotting the profile of the roads your are planning to do with your bicycle. It also can import routes from kml.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.