Unchecky is a lightweight application that aims to “keep your checkboxes clear.” It automatically unchecks the boxes that allow companies to install promotional crapware on your computer, and issues warnings if you accidentally agree to install something you may not want.his is probably the easiest program in the world to install. Head over to unchecky.com and click on the big button that says download. Run the file, click install, click finish, and you’re done! Since Unchecky is mostly meant for novice users, its simple installation process is well-suited.