In this work we briefly describe the most relevant features of WSXM, a freeware scanning
probe microscopy software based on MS-Windows. The article is structured in three
different sections: The introduction is a perspective on the importance of software
on scanning probe microscopy. The second section is devoted to describe the general
structure of the application; in this section the capabilities of WSXM to read third
party files are stressed. Finally, a detailed discussion of some relevant procedures
of the software is carried out.