Abstract: An ecosystem vision-making application includes a web server that delivers data from a database for a geographic model together with JavaScript scripts that implement the model, both being delivered to a JavaScript-enabled web browser on a client. Using tools defined by the vision-making application, vision parameters are defined for a vision applicable to a geographic location. Execution of the JavaScript scripts by the web browser enables calculation of an environmental performance indicator which includes metrics for ecologically significant performance indicators for the vision applied to the geographic location. Other performance metrics may be calculated, such as social metrics, economic metrics and livability metrics. These metrics may also be calculated for baseline visions and for visions from other users, thereby enabling comparison with the user-defined vision, and so as to provide for evaluation, change, improvement, commentary, distribution and sharing of the vision.