7Zip. It's clean and has a lot of convenient features.
Bitwarden. I have too many accounts these days. It's a life saver and it's on all my devices!
Rufus Formatting tool. This rules. It's great for just formatting or creating a bootable USB. Not to mention it's portable so I can bring it with me to work.
They can all serve the same purpose. The advantages of 7zip are the following:
It is totally free (as both in free beer and free speach)
The 7z compression format is superior to rar because it can compress either more or faster (not both though)
The rar format is proprietary. You are free to decompress but not to compress. In a business setting, you could theoretically get in trouble if you don't have a license. In some countries, e.g. USA, even outside a business setting.
But if you have been using winrar forever, I can't see you changing your ways anytime soon! :)
I have used 7zip on a work computer or something, but it was quite a while ago. I mainly use winrar on my personal computers to decompress files. I may check out 7zip sometime, it may be nice to get rid of that pop up lol.