The other common meaning of "IBM SPSS Portable" refers to the software distribution itself, typically provided on a USB flash drive. This is most often encountered with the or GradPack editions of the software.
If you are a student or faculty member, you can purchase the GradPack through authorized vendors like OnTheHub. These packages offer discounts of up to 90% off the commercial retail price. ibm spss portable
Supported by the University of Amsterdam, JASP is a free alternative designed to be familiar to SPSS users, offering both standard and Bayesian statistical analyses. The other common meaning of "IBM SPSS Portable"