The University of Kansas has an amazing central IT office which provides students, faculty, and staff with access to hunderds of software programs at free or reduced rates. To learn more, go to: https://technology.ku.edu/software.
MATLAB is free for KU Students: https://technology.ku.edu/software/mathworks-matlab
So is ChemOffice Ultra: https://technology.ku.edu/software/chemoffice-ultra#top
But SigmaPlot costs $100: https://technology.ku.edu/software/sigma-plot
If you are trying to learn a new peice of software on your own, check out these wonderful Hot-To Guides: https://howto.ku.edu/
KU students, staff, and fculty also enjoy many helpful online software resources such as saving to a cloud via MyCommunity/OneDrive: mycommunity.ku.edu
Faculty, Staff, and GTA/GRAs also have access to host web-based meetings through Zoom: https://kansas.zoom.us/
If you cannot find the program you need through these resources, we suggest asking your instructor or advisor for additional information.