This is likely not the exact site you are looking for, but maybe it is close enough: https://privacytoolslist.com/. Source: over 1 year ago

Here is a good privacy tool list for an idea of what you should be using: https://privacytoolslist.com/. Source: over 2 years ago

Found something ir the AUR, but the last update was on 25/05/2021, and it point to this github link. Source: about 1 year ago

I tried this once a day, but always got 403 forbidden error. The udemy-dl repo has been archived, and the author won't support it any more. Can anyone here kindly help? Thank you! Source: over 2 years ago

If the course doesn't use DRM then https://github.com/r0oth3x49/udemy-dl otherwise https://github.com/Puyodead1/udemy-downloader and https://github.com/Satsuoni/widevine-l3-guesser with downgraded CDM to 2209 (might stop working on Udemy in the future though, but it still works for now). Source: over 2 years ago

Thanks for the response. I was looking at using Udemy-dl https://github.com/r0oth3x49/udemy-dl and downloading the courses using the access token in the cookies.txt file instead of logging in using my account details. Would this be safer? I might try using IDM and see if anything happens if I download 1 course. Source: over 2 years ago

Udemy-dl is a good option (here I published the steps). Source: over 2 years ago