The Common Analytical Framework (CAF) Toolkit is a toolkit of transport planning and appraisal functionalities. It's the beginning of a project to make a lot of the useful stuff from NorMITs Demand more widely available and easily accessible.
CAF.Toolkit happily accepts contributions.
The best way to contribute to this project is to go to the issues tab and report bugs or submit a feature request. This helps CAF.Toolkit become more stable and full-featured. Please check the closed bugs before submitting a bug report to see if your question has already been answered.