Originally Posted by DJFriar
You can use an app like AppZapper to completely remove applications. It has a safety for apps that shouldn't be removed. I wouldn't call it foolproof, but it is certainly better than blindly deleting things.
Originally Posted by klongwood
I would recommend AppCleaner. It works exactly like AppZapper but it's free. I have used both and have been satisfied with both.
I agree with both of these suggestions. You can manually delete applications fine from your Mac, if you know what you are doing and what files to delete. Honestly, you can get away with just deleting the application from the Applications folder... but there will be Library files and remnants left behind on your machine.
If you want a cleaner, quicker and easier (for most people) solution... then you should check out AppCleaner / AppZapper. I have had a great experience with AppZapper (although not free). You can remove Applications, Preference Panes, Add-Ons, etc. Yes, you can
remove all of these things manually through OSX if you know what you are doing... but, most likely, you will not clean up all of the files like AppZapper / AppCleaner does.