What are some alternatives?
When comparing KNIME Analytics Platform and IBM SPSS Statistics, you can also consider the following products
RStudio - RStudio™ is a new integrated development environment (IDE) for R.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Stata - Stata is a software that combines hundreds of different statistical tools into one user interface. Everything from data management to statistical analysis to publication-quality graphics is supported by Stata. Read more about Stata.
IBM Watson Studio - Learn more about Watson Studio. Increase productivity by giving your team a single environment to work with the best of open source and IBM software, to build and deploy an AI solution.
PSPP - PSPP is a free software application for analysis of sampled data.
JMP - JMP is a data representation tool that empowers the engineers, mathematicians and scientists to explore the any of data visually.