With gfit one can create a model for virtually any type of system using minimal amount of computer code. It is particularly useful for studying various systems in Biophysics, Biochemistry and Cell Biology. The interface for gfit models specifies relationships between input and output variables in a rule-based fashion. It provides flexibility and allows to re-use same models for many related problems.
For more information and for most current version of software visit the project's website: http://gfit.sourceforge.net
gfit analyzes data using models. One sample model is included in the distribution. A brief modeling guide can be found on the website. More models will be also shared through the website. I can provide help with simple models or collaborate on more complex ones.