Nowadays, there are a lot of developers who claim to offer free and clean applications but hide settings' changes and even third-party tools inside the installers. It's gotten so worse that even the programs that you get from SourceForge, one of the most well-known platforms for open-source applications may come with hidden software.
Unfortunately, many people don't pay that much attention during the installation process and end up with a changed home page in their web browser, a toolbar that's annoying and takes up resource needlessly, unwanted applications or even adware. What's worse is that if you accidentally forget to uncheck these "offers", getting things back to how they were can be very time-consuming and extremely difficult. This is why a tool like Unchecky can make all the difference in the world.
Unchecky is a lightweight tool that stops installers from adding unwanted stuff on your PC or from changing the settings of your other applications, by automatically removing the check marks from the "offers" that you get during the setup process. Basically, all you have to do is to install Unchecky on your PC, and the application will quietly run in your system tray doing its job without bothering you at all, so you can completely forget that it's there.
As far as I'm concerned Unchecky is great for people like me who have to install tens of applications on a daily basis as well as for people who aren't that great with computers and don't know or don't pay attention to what they're clicking on. This tool can save you a lot of headaches in the long run, is very effective, and it comes with absolutely no strings attached, so I would definitely recommend it.