It says your question is in Passive Cutaneous Anaphylaxis, but it is about PCA statistics :)

R

Ade4 package

These two free programs from Europe are useful for evaluating clustering and relationships between variables beyond principal components such as factor analysis.

https://www.jamovi.org/download.html

https://jasp-stats.org/download/

There is a program named PAST. You can do PCA there and diversity indexes too. It is a free software and easy to use.

you can use R with different packages like factoextra, http://www.sthda.com/english/articles/31-principal-component-methods-in-r-practical-guide/118-principal-component-analysis-in-r-prcomp-vs-princomp/

PAST software is free and you can easily do PCA in that

Here is the link

https://www.nhm.uio.no/english/research/infrastructure/past/#:~:text=Past%20is%20free%20software%20for,with%20version%203%20in%202013.

R-3.5.3 (www.R-project.org)