PicoQuant GmbH has launched version 3.0 of FluoFit multiexponential fluorescence decay fit software for use with PCs. An import tool calculates anisotropic decay and estimates features for the G-factor. The software implements an iterative reconvolution of instrument response and observed fluorescence decay with nonlinear error minimization. Fit parameters include instrument response function, decay background and time shift. The 32-bit software is supported by Windows 95, 98, ME, NT and 2000.