Unchecky

If you are in the habit of testing and installing applications on a regular basis, you probably know by now that one of the most common methods used by developers to try and generate revenue is to integrate various kinds of offers within their installers.
At this point, it is totally up to you to pay attention and to decline whatever offers you do not want, lest you end up with a new toolbar within your browsers or a changed search engine. Or you can use Unchecky, which can automate declining of offers for you.
This application installs without any issues and you can get it up and running within seconds - even though it does not actually feature a traditional user interface, it runs in the background without requiring too much RAM or CPU, or slowing down the PC.
Due to Unchecky, the next time you attempt to install a software utility that bundles third-party components within its installer, all its options will be expanded so you can view all the changes it offers, and they will also be unchecked.
If you accidentally click one of the checkboxes, Unchecky promptly displays a warning message asking for confirmation that you indeed want to install such a component. This behavior can be of great help when it comes to apps that make modifications to your PC without asking for your permission in the first place.
All in all, while it might not seem like it is protecting your PC since it is not displayed in the taskbar or the system tray, Unchecky can actually ensure that you do not end up slowing down your computer with unsolicited browsers or various apps you did not intend to install.

Unchecky Video Guide