PPViewer is a LabVIEW program by Ilya Stepanenko for interactive exploration of data and model fit. It was designed especially for time-resolved spectroscopy applications, and can read model fit files output by TIMP, as well as datafiles in the wavelength-explicit format.

If you don't have LabVIEW 8.2.1 or later, you can run PPViewer under Windows by installing the free LabVIEW Run-time Engine (24MB). PPViewer itself doesn't need installation: just unpack the zip archive somewhere and launch PPViewer.exe. For now, binaries for other platforms are not available.