fitFCS is a Matlab program for fitting FCS autocorrelation curves. The program can be run in command-prompt mode and in GUI-mode. A representative screenshot of the latter is shown below.
Detailed help is available from within the program (by clicking on the yellow Help button) or here.
The program automatically upgrades itself.
Download this ZIP file, containing the Matlab program (fitFCS.p) and the HTML help file, and unzip it to a folder. Execute the program by typing 'fitFCS' at the Matlab command prompt (GUI-mode). For more detailed instructions and for executing the program in command-prompt mode, consult the help file.