https://www.cloudynights.com/topic/800789-spectroscopy-softwares/RSpec is probably the most user friendly, particularly for a beginner, though it is not free once the trial has expired.
Visual Spec is a free alternative and is the original program that RSpec was loosely based on. I used it when I was developing the star analyser, though it is not that stable and tends to crash from time to time
http://astrosurf.com/vdesnoux/ ISIS is free and very capable and I use it for all my spectroscopy data reduction now but it is difficult for beginners
http://www.astrosurf...s-software.html
BASS is free, though I have not used it myself
https://groups.io/g/BassSpectrohttps://familystar.org.tw/index.php?option=com_smf&Itemid=33&topic=37195.0
