PolSARPro is a package offered freely by the European Space Agency. The package provides polarimetric processing tools for Dual and Quad-pol SAR data. Developed under the leadership of Eric Pottier the contributors of PolSARPro reads like a ‘Who’s Who’ of PolSAR (Ainsworth, Boerner, Lee, Touzi, Cloude…). Incidently, it is also an excellent example of how a diverse, international group can collaborate for the good of the community. PolSARPro is THE tool for polarimetric SAR processing. It is relatively simple to use and there is extensive support material (including background material on SAR polarimetry). PolSARPro does not offer terrain correction but does offer a connection to ASF’s Map Ready so if that program is installed you can seamlessly correct your PolSARPro products in Map Ready.