Spaghetti models allow users to visualize the flows through a system, and in this respect are similar to Sankey diagrams. These flows can look like spaghetti – hence the name, and were first used to visualize material flows through factories. They have various uses in meteorology (particularly hurricane path recording and forecasting), and in medicine.
Below is a list of tools which support the creation of spaghetti models:
GraphPad is heavily used by pharmaceutical companies and various research institutes.
SAS supports spaghetti plots with its SGPLOT procedure.
Stata supports spaghetti plots through a program called spagplot by ATS.