The FieldTrip software includes the ft_trackusage function for usage tracking. This function is called once in every MATLAB session from within ft_defaults at the moment that you start using the first high-level FieldTrip function. Furthermore, this function can be called at the start of each high-level FieldTrip function.
We track the software usage this to gather information about the number of users, how often the software is used, which MATLAB versions are being used, about popular use cases, about potential frequent problems, etc. This information helps us in deciding where to focus our attention in continued development. Furthermore, this information is used to inform our funding sources about the success of the toolbox.
We also monitor the usage of this website using Google Analytics.