gwyddion

Gwyddion is a modular program for SPM (scanning probe microscopy) data visualization and analysis. Primarily it is intended for analysis of height fields obtained by scanning probe microscopy techniques (AFM, MFM, STM, SNOM/NSOM) and it supports many SPM data formats. However, it can also be used for general height field and image processing, for instance for analysis of profilometry data. See the overview of data processing functions.